From: Ajay Singh <ajay.kathat@xxxxxxxxxxxxx> Some of the HIF layer API's return zero for failure and non-zero for success condition. Now, modified the functions to return zero for success and non-zero for failure as its recommended approach suggested in [1]. 1. https://lore.kernel.org/driverdev-devel/20191113183322.a54mh2w6dulklgsd@kili.mountain/ Signed-off-by: Ajay Singh <ajay.kathat@xxxxxxxxxxxxx> --- drivers/staging/wilc1000/netdev.c | 45 +++----- drivers/staging/wilc1000/sdio.c | 178 +++++++++++++----------------- drivers/staging/wilc1000/spi.c | 138 ++++++++++++----------- drivers/staging/wilc1000/wlan.c | 75 +++++++------ 4 files changed, 197 insertions(+), 239 deletions(-) diff --git a/drivers/staging/wilc1000/netdev.c b/drivers/staging/wilc1000/netdev.c index 960dbc8d5173..0f48e74aa3ea 100644 --- a/drivers/staging/wilc1000/netdev.c +++ b/drivers/staging/wilc1000/netdev.c @@ -183,7 +183,7 @@ static int wilc_wlan_get_firmware(struct net_device *dev) { struct wilc_vif *vif = netdev_priv(dev); struct wilc *wilc = vif->wilc; - int chip_id, ret = 0; + int chip_id; const struct firmware *wilc_firmware; char *firmware; @@ -198,14 +198,11 @@ static int wilc_wlan_get_firmware(struct net_device *dev) if (request_firmware(&wilc_firmware, firmware, wilc->dev) != 0) { netdev_err(dev, "%s - firmware not available\n", firmware); - ret = -1; - goto fail; + return -EINVAL; } wilc->firmware = wilc_firmware; -fail: - - return ret; + return 0; } static int wilc_start_firmware(struct net_device *dev) @@ -215,7 +212,7 @@ static int wilc_start_firmware(struct net_device *dev) int ret = 0; ret = wilc_wlan_start(wilc); - if (ret < 0) + if (ret) return ret; if (!wait_for_completion_timeout(&wilc->sync_event, @@ -238,7 +235,7 @@ static int wilc1000_firmware_download(struct net_device *dev) ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data, wilc->firmware->size); - if (ret < 0) + if (ret) return ret; release_firmware(wilc->firmware); @@ -417,7 +414,7 @@ static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif) return 0; fail: - return -1; + return -EINVAL; } static void wlan_deinitialize_threads(struct net_device *dev) @@ -497,14 +494,12 @@ static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif) wl->close = 0; ret = wilc_wlan_init(dev); - if (ret < 0) - return -EIO; + if (ret) + return ret; ret = wlan_initialize_threads(dev); - if (ret < 0) { - ret = -EIO; + if (ret) goto fail_wilc_wlan; - } if (wl->gpio_irq && init_irq(dev)) { ret = -EIO; @@ -518,22 +513,17 @@ static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif) goto fail_irq_init; } - if (wilc_wlan_get_firmware(dev)) { - ret = -EIO; + ret = wilc_wlan_get_firmware(dev); + if (ret) goto fail_irq_enable; - } ret = wilc1000_firmware_download(dev); - if (ret < 0) { - ret = -EIO; + if (ret) goto fail_irq_enable; - } ret = wilc_start_firmware(dev); - if (ret < 0) { - ret = -EIO; + if (ret) goto fail_irq_enable; - } if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) { int size; @@ -545,11 +535,10 @@ static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif) firmware_ver[size] = '\0'; netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver); } - ret = wilc_init_fw_config(dev, vif); - if (ret < 0) { + ret = wilc_init_fw_config(dev, vif); + if (ret) { netdev_err(dev, "Failed to configure firmware\n"); - ret = -EIO; goto fail_fw_start; } wl->initialized = true; @@ -600,11 +589,11 @@ static int wilc_mac_open(struct net_device *ndev) netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev); ret = wilc_init_host_int(ndev); - if (ret < 0) + if (ret) return ret; ret = wilc_wlan_initialize(ndev, vif); - if (ret < 0) { + if (ret) { wilc_deinit_host_int(ndev); return ret; } diff --git a/drivers/staging/wilc1000/sdio.c b/drivers/staging/wilc1000/sdio.c index 319e039380b0..ca99335687c4 100644 --- a/drivers/staging/wilc1000/sdio.c +++ b/drivers/staging/wilc1000/sdio.c @@ -273,7 +273,7 @@ static int wilc_sdio_set_func0_csa_address(struct wilc *wilc, u32 adr) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x10c data...\n"); - goto fail; + return ret; } cmd.address = 0x10d; @@ -281,7 +281,7 @@ static int wilc_sdio_set_func0_csa_address(struct wilc *wilc, u32 adr) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x10d data...\n"); - goto fail; + return ret; } cmd.address = 0x10e; @@ -289,11 +289,9 @@ static int wilc_sdio_set_func0_csa_address(struct wilc *wilc, u32 adr) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x10e data...\n"); - goto fail; + return ret; } - return 1; -fail: return 0; } @@ -311,7 +309,7 @@ static int wilc_sdio_set_func0_block_size(struct wilc *wilc, u32 block_size) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x10 data...\n"); - goto fail; + return ret; } cmd.address = 0x11; @@ -319,11 +317,9 @@ static int wilc_sdio_set_func0_block_size(struct wilc *wilc, u32 block_size) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x11 data...\n"); - goto fail; + return ret; } - return 1; -fail: return 0; } @@ -347,18 +343,16 @@ static int wilc_sdio_set_func1_block_size(struct wilc *wilc, u32 block_size) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x110 data...\n"); - goto fail; + return ret; } cmd.address = 0x111; cmd.data = (u8)(block_size >> 8); ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd52, set 0x111 data...\n"); - goto fail; + return ret; } - return 1; -fail: return 0; } @@ -384,19 +378,18 @@ static int wilc_sdio_write_reg(struct wilc *wilc, u32 addr, u32 data) cmd.address = addr; cmd.data = data; ret = wilc_sdio_cmd52(wilc, &cmd); - if (ret) { + if (ret) dev_err(&func->dev, "Failed cmd 52, read reg (%08x) ...\n", addr); - goto fail; - } } else { struct sdio_cmd53 cmd; /** * set the AHB address **/ - if (!wilc_sdio_set_func0_csa_address(wilc, addr)) - goto fail; + ret = wilc_sdio_set_func0_csa_address(wilc, addr); + if (ret) + return ret; cmd.read_write = 1; cmd.function = 0; @@ -407,18 +400,12 @@ static int wilc_sdio_write_reg(struct wilc *wilc, u32 addr, u32 data) cmd.buffer = (u8 *)&data; cmd.block_size = sdio_priv->block_size; ret = wilc_sdio_cmd53(wilc, &cmd); - if (ret) { + if (ret) dev_err(&func->dev, "Failed cmd53, write reg (%08x)...\n", addr); - goto fail; - } } - return 1; - -fail: - - return 0; + return ret; } static int wilc_sdio_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size) @@ -470,14 +457,15 @@ static int wilc_sdio_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size) cmd.buffer = buf; cmd.block_size = block_size; if (addr > 0) { - if (!wilc_sdio_set_func0_csa_address(wilc, addr)) - goto fail; + ret = wilc_sdio_set_func0_csa_address(wilc, addr); + if (ret) + return ret; } ret = wilc_sdio_cmd53(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd53 [%x], block send...\n", addr); - goto fail; + return ret; } if (addr > 0) addr += nblk * block_size; @@ -493,21 +481,18 @@ static int wilc_sdio_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size) cmd.block_size = block_size; if (addr > 0) { - if (!wilc_sdio_set_func0_csa_address(wilc, addr)) - goto fail; + ret = wilc_sdio_set_func0_csa_address(wilc, addr); + if (ret) + return ret; } ret = wilc_sdio_cmd53(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd53 [%x], bytes send...\n", addr); - goto fail; + return ret; } } - return 1; - -fail: - return 0; } @@ -528,14 +513,15 @@ static int wilc_sdio_read_reg(struct wilc *wilc, u32 addr, u32 *data) if (ret) { dev_err(&func->dev, "Failed cmd 52, read reg (%08x) ...\n", addr); - goto fail; + return ret; } *data = cmd.data; } else { struct sdio_cmd53 cmd; - if (!wilc_sdio_set_func0_csa_address(wilc, addr)) - goto fail; + ret = wilc_sdio_set_func0_csa_address(wilc, addr); + if (ret) + return ret; cmd.read_write = 0; cmd.function = 0; @@ -550,16 +536,11 @@ static int wilc_sdio_read_reg(struct wilc *wilc, u32 addr, u32 *data) if (ret) { dev_err(&func->dev, "Failed cmd53, read reg (%08x)...\n", addr); - goto fail; + return ret; } } le32_to_cpus(data); - - return 1; - -fail: - return 0; } @@ -612,14 +593,15 @@ static int wilc_sdio_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) cmd.buffer = buf; cmd.block_size = block_size; if (addr > 0) { - if (!wilc_sdio_set_func0_csa_address(wilc, addr)) - goto fail; + ret = wilc_sdio_set_func0_csa_address(wilc, addr); + if (ret) + return ret; } ret = wilc_sdio_cmd53(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd53 [%x], block read...\n", addr); - goto fail; + return ret; } if (addr > 0) addr += nblk * block_size; @@ -635,21 +617,18 @@ static int wilc_sdio_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) cmd.block_size = block_size; if (addr > 0) { - if (!wilc_sdio_set_func0_csa_address(wilc, addr)) - goto fail; + ret = wilc_sdio_set_func0_csa_address(wilc, addr); + if (ret) + return ret; } ret = wilc_sdio_cmd53(wilc, &cmd); if (ret) { dev_err(&func->dev, "Failed cmd53 [%x], bytes read...\n", addr); - goto fail; + return ret; } } - return 1; - -fail: - return 0; } @@ -661,7 +640,7 @@ static int wilc_sdio_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) static int wilc_sdio_deinit(struct wilc *wilc) { - return 1; + return 0; } static int wilc_sdio_init(struct wilc *wilc, bool resume) @@ -686,15 +665,16 @@ static int wilc_sdio_init(struct wilc *wilc, bool resume) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Fail cmd 52, enable csa...\n"); - goto fail; + return ret; } /** * function 0 block size **/ - if (!wilc_sdio_set_func0_block_size(wilc, WILC_SDIO_BLOCK_SIZE)) { + ret = wilc_sdio_set_func0_block_size(wilc, WILC_SDIO_BLOCK_SIZE); + if (ret) { dev_err(&func->dev, "Fail cmd 52, set func 0 block size...\n"); - goto fail; + return ret; } sdio_priv->block_size = WILC_SDIO_BLOCK_SIZE; @@ -710,7 +690,7 @@ static int wilc_sdio_init(struct wilc *wilc, bool resume) if (ret) { dev_err(&func->dev, "Fail cmd 52, set IOE register...\n"); - goto fail; + return ret; } /** @@ -727,7 +707,7 @@ static int wilc_sdio_init(struct wilc *wilc, bool resume) if (ret) { dev_err(&func->dev, "Fail cmd 52, get IOR register...\n"); - goto fail; + return ret; } if (cmd.data == 0x2) break; @@ -735,15 +715,16 @@ static int wilc_sdio_init(struct wilc *wilc, bool resume) if (loop <= 0) { dev_err(&func->dev, "Fail func 1 is not ready...\n"); - goto fail; + return -EINVAL; } /** * func 1 is ready, set func 1 block size **/ - if (!wilc_sdio_set_func1_block_size(wilc, WILC_SDIO_BLOCK_SIZE)) { + ret = wilc_sdio_set_func1_block_size(wilc, WILC_SDIO_BLOCK_SIZE); + if (ret) { dev_err(&func->dev, "Fail set func 1 block size...\n"); - goto fail; + return ret; } /** @@ -757,16 +738,17 @@ static int wilc_sdio_init(struct wilc *wilc, bool resume) ret = wilc_sdio_cmd52(wilc, &cmd); if (ret) { dev_err(&func->dev, "Fail cmd 52, set IEN register...\n"); - goto fail; + return ret; } /** * make sure can read back chip id correctly **/ if (!resume) { - if (!wilc_sdio_read_reg(wilc, 0x1000, &chipid)) { + ret = wilc_sdio_read_reg(wilc, 0x1000, &chipid); + if (ret) { dev_err(&func->dev, "Fail cmd read chip id...\n"); - goto fail; + return ret; } dev_err(&func->dev, "chipid (%08x)\n", chipid); if ((chipid & 0xfff) > 0x2a0) @@ -777,10 +759,6 @@ static int wilc_sdio_init(struct wilc *wilc, bool resume) sdio_priv->has_thrpt_enh3); } - return 1; - -fail: - return 0; } @@ -806,7 +784,7 @@ static int wilc_sdio_read_size(struct wilc *wilc, u32 *size) tmp |= (cmd.data << 8); *size = tmp; - return 1; + return 0; } static int wilc_sdio_read_int(struct wilc *wilc, u32 *int_status) @@ -865,7 +843,7 @@ static int wilc_sdio_read_int(struct wilc *wilc, u32 *int_status) *int_status = tmp; - return 1; + return 0; } static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32 val) @@ -909,10 +887,10 @@ static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32 val) dev_err(&func->dev, "Failed cmd52, set 0xf8 data (%d) ...\n", __LINE__); - goto fail; + return ret; } } - return 1; + return 0; } if (sdio_priv->irq_gpio) { /* has_thrpt_enh2 uses register 0xf8 to clear interrupts. */ @@ -926,7 +904,6 @@ static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32 val) if (flags) { int i; - ret = 1; for (i = 0; i < sdio_priv->nint; i++) { if (flags & 1) { struct sdio_cmd52 cmd; @@ -942,15 +919,12 @@ static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32 val) dev_err(&func->dev, "Failed cmd52, set 0xf8 data (%d) ...\n", __LINE__); - goto fail; + return ret; } } - if (!ret) - break; flags >>= 1; } - if (!ret) - goto fail; + for (i = sdio_priv->nint; i < MAX_NUM_INT; i++) { if (flags & 1) dev_err(&func->dev, @@ -985,11 +959,9 @@ static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32 val) dev_err(&func->dev, "Failed cmd52, set 0xf6 data (%d) ...\n", __LINE__); - goto fail; + return ret; } } - return 1; -fail: return 0; } @@ -1001,12 +973,12 @@ static int wilc_sdio_sync_ext(struct wilc *wilc, int nint) if (nint > MAX_NUM_INT) { dev_err(&func->dev, "Too many interrupts (%d)...\n", nint); - return 0; + return -EINVAL; } if (nint > MAX_NUN_INT_THRPT_ENH2) { dev_err(&func->dev, "Cannot support more than 5 interrupts when has_thrpt_enh2=1.\n"); - return 0; + return -EINVAL; } sdio_priv->nint = nint; @@ -1014,15 +986,15 @@ static int wilc_sdio_sync_ext(struct wilc *wilc, int nint) /** * Disable power sequencer **/ - if (!wilc_sdio_read_reg(wilc, WILC_MISC, ®)) { + if (wilc_sdio_read_reg(wilc, WILC_MISC, ®)) { dev_err(&func->dev, "Failed read misc reg...\n"); - return 0; + return -EINVAL; } reg &= ~BIT(8); - if (!wilc_sdio_write_reg(wilc, WILC_MISC, reg)) { + if (wilc_sdio_write_reg(wilc, WILC_MISC, reg)) { dev_err(&func->dev, "Failed write misc reg...\n"); - return 0; + return -EINVAL; } if (sdio_priv->irq_gpio) { @@ -1033,59 +1005,59 @@ static int wilc_sdio_sync_ext(struct wilc *wilc, int nint) * interrupt pin mux select **/ ret = wilc_sdio_read_reg(wilc, WILC_PIN_MUX_0, ®); - if (!ret) { + if (ret) { dev_err(&func->dev, "Failed read reg (%08x)...\n", WILC_PIN_MUX_0); - return 0; + return ret; } reg |= BIT(8); ret = wilc_sdio_write_reg(wilc, WILC_PIN_MUX_0, reg); - if (!ret) { + if (ret) { dev_err(&func->dev, "Failed write reg (%08x)...\n", WILC_PIN_MUX_0); - return 0; + return ret; } /** * interrupt enable **/ ret = wilc_sdio_read_reg(wilc, WILC_INTR_ENABLE, ®); - if (!ret) { + if (ret) { dev_err(&func->dev, "Failed read reg (%08x)...\n", WILC_INTR_ENABLE); - return 0; + return ret; } for (i = 0; (i < 5) && (nint > 0); i++, nint--) reg |= BIT((27 + i)); ret = wilc_sdio_write_reg(wilc, WILC_INTR_ENABLE, reg); - if (!ret) { + if (ret) { dev_err(&func->dev, "Failed write reg (%08x)...\n", WILC_INTR_ENABLE); - return 0; + return ret; } if (nint) { ret = wilc_sdio_read_reg(wilc, WILC_INTR2_ENABLE, ®); - if (!ret) { + if (ret) { dev_err(&func->dev, "Failed read reg (%08x)...\n", WILC_INTR2_ENABLE); - return 0; + return ret; } for (i = 0; (i < 3) && (nint > 0); i++, nint--) reg |= BIT(i); ret = wilc_sdio_read_reg(wilc, WILC_INTR2_ENABLE, ®); - if (!ret) { + if (ret) { dev_err(&func->dev, "Failed write reg (%08x)...\n", WILC_INTR2_ENABLE); - return 0; + return ret; } } } - return 1; + return 0; } /* Global sdio HIF function table */ diff --git a/drivers/staging/wilc1000/spi.c b/drivers/staging/wilc1000/spi.c index 4b883a933b44..3ffc7b4fddf6 100644 --- a/drivers/staging/wilc1000/spi.c +++ b/drivers/staging/wilc1000/spi.c @@ -88,11 +88,6 @@ static u8 crc7(u8 crc, const u8 *buffer, u32 len) #define CMD_SINGLE_READ 0xca #define CMD_RESET 0xcf -#define N_OK 1 -#define N_FAIL 0 -#define N_RESET -1 -#define N_RETRY -2 - #define DATA_PKT_SZ_256 256 #define DATA_PKT_SZ_512 512 #define DATA_PKT_SZ_1K 1024 @@ -299,7 +294,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, u32 len2; u8 rsp; int len = 0; - int result = N_OK; + int result = 0; int retry; u8 crc[2]; @@ -387,11 +382,11 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, break; default: - result = N_FAIL; + result = -EINVAL; break; } - if (result != N_OK) + if (result) return result; if (!spi_priv->crc_off) @@ -424,7 +419,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (len2 > ARRAY_SIZE(wb)) { dev_err(&spi->dev, "spi buffer size too small (%d) (%zu)\n", len2, ARRAY_SIZE(wb)); - return N_FAIL; + return -EINVAL; } /* zero spi write buffers. */ for (wix = len; wix < len2; wix++) @@ -433,7 +428,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (wilc_spi_tx_rx(wilc, wb, rb, len2)) { dev_err(&spi->dev, "Failed cmd write, bus error...\n"); - return N_FAIL; + return -EINVAL; } /* @@ -448,7 +443,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, dev_err(&spi->dev, "Failed cmd response, cmd (%02x), resp (%02x)\n", cmd, rsp); - return N_FAIL; + return -EINVAL; } /* @@ -458,7 +453,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (rsp != 0x00) { dev_err(&spi->dev, "Failed cmd state response state (%02x)\n", rsp); - return N_FAIL; + return -EINVAL; } if (cmd == CMD_INTERNAL_READ || cmd == CMD_SINGLE_READ || @@ -485,7 +480,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (retry <= 0) { dev_err(&spi->dev, "Error, data read response (%02x)\n", rsp); - return N_RESET; + return -EAGAIN; } } @@ -501,7 +496,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, } else { dev_err(&spi->dev, "buffer overrun when reading data.\n"); - return N_FAIL; + return -EINVAL; } if (!spi_priv->crc_off) { @@ -514,7 +509,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, } else { dev_err(&spi->dev, "buffer overrun when reading crc.\n"); - return N_FAIL; + return -EINVAL; } } } else if ((cmd == CMD_DMA_READ) || (cmd == CMD_DMA_EXT_READ)) { @@ -540,7 +535,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (wilc_spi_rx(wilc, &b[ix], nbytes)) { dev_err(&spi->dev, "Failed block read, bus err\n"); - return N_FAIL; + return -EINVAL; } /* @@ -549,7 +544,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (!spi_priv->crc_off && wilc_spi_rx(wilc, crc, 2)) { dev_err(&spi->dev, "Failed block crc read, bus err\n"); - return N_FAIL; + return -EINVAL; } ix += nbytes; @@ -581,14 +576,14 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (wilc_spi_rx(wilc, &rsp, 1)) { dev_err(&spi->dev, "Failed resp read, bus err\n"); - result = N_FAIL; + result = -EINVAL; break; } if (((rsp >> 4) & 0xf) == 0xf) break; } while (retry--); - if (result == N_FAIL) + if (result) break; /* @@ -597,7 +592,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (wilc_spi_rx(wilc, &b[ix], nbytes)) { dev_err(&spi->dev, "Failed block read, bus err\n"); - result = N_FAIL; + result = -EINVAL; break; } @@ -607,7 +602,7 @@ static int spi_cmd_complete(struct wilc *wilc, u8 cmd, u32 adr, u8 *b, u32 sz, if (!spi_priv->crc_off && wilc_spi_rx(wilc, crc, 2)) { dev_err(&spi->dev, "Failed block crc read, bus err\n"); - result = N_FAIL; + result = -EINVAL; break; } @@ -623,7 +618,7 @@ static int spi_data_write(struct wilc *wilc, u8 *b, u32 sz) struct spi_device *spi = to_spi_device(wilc->dev); struct wilc_spi *spi_priv = wilc->bus_data; int ix, nbytes; - int result = 1; + int result = 0; u8 cmd, order, crc[2] = {0}; /* @@ -651,7 +646,7 @@ static int spi_data_write(struct wilc *wilc, u8 *b, u32 sz) if (wilc_spi_tx(wilc, &cmd, 1)) { dev_err(&spi->dev, "Failed data block cmd write, bus error...\n"); - result = N_FAIL; + result = -EINVAL; break; } @@ -661,7 +656,7 @@ static int spi_data_write(struct wilc *wilc, u8 *b, u32 sz) if (wilc_spi_tx(wilc, &b[ix], nbytes)) { dev_err(&spi->dev, "Failed data block write, bus error...\n"); - result = N_FAIL; + result = -EINVAL; break; } @@ -671,7 +666,7 @@ static int spi_data_write(struct wilc *wilc, u8 *b, u32 sz) if (!spi_priv->crc_off) { if (wilc_spi_tx(wilc, crc, 2)) { dev_err(&spi->dev, "Failed data block crc write, bus error...\n"); - result = N_FAIL; + result = -EINVAL; break; } } @@ -700,7 +695,7 @@ static int spi_internal_write(struct wilc *wilc, u32 adr, u32 dat) cpu_to_le32s(&dat); result = spi_cmd_complete(wilc, CMD_INTERNAL_WRITE, adr, (u8 *)&dat, 4, 0); - if (result != N_OK) + if (result) dev_err(&spi->dev, "Failed internal write cmd...\n"); return result; @@ -713,14 +708,14 @@ static int spi_internal_read(struct wilc *wilc, u32 adr, u32 *data) result = spi_cmd_complete(wilc, CMD_INTERNAL_READ, adr, (u8 *)data, 4, 0); - if (result != N_OK) { + if (result) { dev_err(&spi->dev, "Failed internal read cmd...\n"); - return 0; + return result; } le32_to_cpus(data); - return 1; + return result; } /******************************************** @@ -744,7 +739,7 @@ static int wilc_spi_write_reg(struct wilc *wilc, u32 addr, u32 data) } result = spi_cmd_complete(wilc, cmd, addr, (u8 *)&data, 4, clockless); - if (result != N_OK) + if (result) dev_err(&spi->dev, "Failed cmd, write reg (%08x)...\n", addr); return result; @@ -759,23 +754,23 @@ static int wilc_spi_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size) * has to be greated than 4 */ if (size <= 4) - return 0; + return -EINVAL; result = spi_cmd_complete(wilc, CMD_DMA_EXT_WRITE, addr, NULL, size, 0); - if (result != N_OK) { + if (result) { dev_err(&spi->dev, "Failed cmd, write block (%08x)...\n", addr); - return 0; + return result; } /* * Data */ result = spi_data_write(wilc, buf, size); - if (result != N_OK) + if (result) dev_err(&spi->dev, "Failed block data write...\n"); - return 1; + return result; } static int wilc_spi_read_reg(struct wilc *wilc, u32 addr, u32 *data) @@ -792,14 +787,14 @@ static int wilc_spi_read_reg(struct wilc *wilc, u32 addr, u32 *data) } result = spi_cmd_complete(wilc, cmd, addr, (u8 *)data, 4, clockless); - if (result != N_OK) { + if (result) { dev_err(&spi->dev, "Failed cmd, read reg (%08x)...\n", addr); - return 0; + return result; } le32_to_cpus(data); - return 1; + return 0; } static int wilc_spi_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) @@ -808,15 +803,13 @@ static int wilc_spi_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) int result; if (size <= 4) - return 0; + return -EINVAL; result = spi_cmd_complete(wilc, CMD_DMA_EXT_READ, addr, buf, size, 0); - if (result != N_OK) { + if (result) dev_err(&spi->dev, "Failed cmd, read block (%08x)...\n", addr); - return 0; - } - return 1; + return result; } /******************************************** @@ -830,7 +823,7 @@ static int wilc_spi_deinit(struct wilc *wilc) /* * TODO: */ - return 1; + return 0; } static int wilc_spi_init(struct wilc *wilc, bool resume) @@ -840,13 +833,14 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) u32 reg; u32 chipid; static int isinit; + int ret; if (isinit) { - if (!wilc_spi_read_reg(wilc, 0x1000, &chipid)) { + ret = wilc_spi_read_reg(wilc, 0x1000, &chipid); + if (ret) dev_err(&spi->dev, "Fail cmd read chip id...\n"); - return 0; - } - return 1; + + return ret; } /* @@ -858,7 +852,8 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) * way to reset */ /* the SPI to it's initial value. */ - if (!spi_internal_read(wilc, WILC_SPI_PROTOCOL_OFFSET, ®)) { + ret = spi_internal_read(wilc, WILC_SPI_PROTOCOL_OFFSET, ®); + if (ret) { /* * Read failed. Try with CRC off. This might happen when module * is removed but chip isn't reset @@ -866,24 +861,26 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) spi_priv->crc_off = 1; dev_err(&spi->dev, "Failed read with CRC on, retrying with CRC off\n"); - if (!spi_internal_read(wilc, WILC_SPI_PROTOCOL_OFFSET, ®)) { + ret = spi_internal_read(wilc, WILC_SPI_PROTOCOL_OFFSET, ®); + if (ret) { /* * Read failed with both CRC on and off, * something went bad */ dev_err(&spi->dev, "Failed internal read protocol\n"); - return 0; + return ret; } } if (spi_priv->crc_off == 0) { reg &= ~0xc; /* disable crc checking */ reg &= ~0x70; reg |= (0x5 << 4); - if (!spi_internal_write(wilc, WILC_SPI_PROTOCOL_OFFSET, reg)) { + ret = spi_internal_write(wilc, WILC_SPI_PROTOCOL_OFFSET, reg); + if (ret) { dev_err(&spi->dev, "[wilc spi %d]: Failed internal write reg\n", __LINE__); - return 0; + return ret; } spi_priv->crc_off = 1; } @@ -891,14 +888,15 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) /* * make sure can read back chip id correctly */ - if (!wilc_spi_read_reg(wilc, 0x1000, &chipid)) { + ret = wilc_spi_read_reg(wilc, 0x1000, &chipid); + if (ret) { dev_err(&spi->dev, "Fail cmd read chip id...\n"); - return 0; + return ret; } isinit = 1; - return 1; + return 0; } static int wilc_spi_read_size(struct wilc *wilc, u32 *size) @@ -930,7 +928,7 @@ static int wilc_spi_sync_ext(struct wilc *wilc, int nint) if (nint > MAX_NUM_INT) { dev_err(&spi->dev, "Too many interrupts (%d)...\n", nint); - return 0; + return -EINVAL; } spi_priv->nint = nint; @@ -939,58 +937,58 @@ static int wilc_spi_sync_ext(struct wilc *wilc, int nint) * interrupt pin mux select */ ret = wilc_spi_read_reg(wilc, WILC_PIN_MUX_0, ®); - if (!ret) { + if (ret) { dev_err(&spi->dev, "Failed read reg (%08x)...\n", WILC_PIN_MUX_0); - return 0; + return ret; } reg |= BIT(8); ret = wilc_spi_write_reg(wilc, WILC_PIN_MUX_0, reg); - if (!ret) { + if (ret) { dev_err(&spi->dev, "Failed write reg (%08x)...\n", WILC_PIN_MUX_0); - return 0; + return ret; } /* * interrupt enable */ ret = wilc_spi_read_reg(wilc, WILC_INTR_ENABLE, ®); - if (!ret) { + if (ret) { dev_err(&spi->dev, "Failed read reg (%08x)...\n", WILC_INTR_ENABLE); - return 0; + return ret; } for (i = 0; (i < 5) && (nint > 0); i++, nint--) reg |= (BIT((27 + i))); ret = wilc_spi_write_reg(wilc, WILC_INTR_ENABLE, reg); - if (!ret) { + if (ret) { dev_err(&spi->dev, "Failed write reg (%08x)...\n", WILC_INTR_ENABLE); - return 0; + return ret; } if (nint) { ret = wilc_spi_read_reg(wilc, WILC_INTR2_ENABLE, ®); - if (!ret) { + if (ret) { dev_err(&spi->dev, "Failed read reg (%08x)...\n", WILC_INTR2_ENABLE); - return 0; + return ret; } for (i = 0; (i < 3) && (nint > 0); i++, nint--) reg |= BIT(i); ret = wilc_spi_read_reg(wilc, WILC_INTR2_ENABLE, ®); - if (!ret) { + if (ret) { dev_err(&spi->dev, "Failed write reg (%08x)...\n", WILC_INTR2_ENABLE); - return 0; + return ret; } } - return 1; + return 0; } /* Global spi HIF function table */ diff --git a/drivers/staging/wilc1000/wlan.c b/drivers/staging/wilc1000/wlan.c index c32af7076012..b904eda42806 100644 --- a/drivers/staging/wilc1000/wlan.c +++ b/drivers/staging/wilc1000/wlan.c @@ -534,7 +534,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) func = wilc->hif_func; do { ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®); - if (!ret) + if (ret) break; if ((reg & 0x1) == 0) @@ -548,7 +548,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) } } while (!wilc->quit); - if (!ret) + if (ret) goto out_release_bus; timeout = 200; @@ -557,16 +557,16 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) WILC_VMM_TBL_RX_SHADOW_BASE, (u8 *)vmm_table, ((i + 1) * 4)); - if (!ret) + if (ret) break; ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2); - if (!ret) + if (ret) break; do { ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, ®); - if (!ret) + if (ret) break; if ((reg >> 2) & 0x1) { entries = ((reg >> 3) & 0x3f); @@ -579,19 +579,19 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) break; } - if (!ret) + if (ret) break; if (entries == 0) { ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®); - if (!ret) + if (ret) break; reg &= ~BIT(0); ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg); } } while (0); - if (!ret) + if (ret) goto out_release_bus; if (entries == 0) { @@ -654,7 +654,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM); - if (!ret) + if (ret) goto out_release_bus; ret = func->hif_block_tx_ext(wilc, 0, txb, offset); @@ -771,7 +771,7 @@ static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status) wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM); ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size); - if (!ret) + if (ret) return; offset += size; @@ -832,7 +832,7 @@ int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer, memcpy(dma_buffer, &buffer[offset], size2); ret = wilc->hif_func->hif_block_tx(wilc, addr, dma_buffer, size2); - if (!ret) + if (ret) break; addr += size2; @@ -841,17 +841,15 @@ int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer, } release_bus(wilc, WILC_BUS_RELEASE_ONLY); - if (!ret) { - ret = -EIO; + if (ret) goto fail; - } } while (offset < buffer_size); fail: kfree(dma_buffer); - return (ret < 0) ? ret : 0; + return ret; } int wilc_wlan_start(struct wilc *wilc) @@ -868,26 +866,26 @@ int wilc_wlan_start(struct wilc *wilc) } acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY); ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg); - if (!ret) { + if (ret) { release_bus(wilc, WILC_BUS_RELEASE_ONLY); - return -EIO; + return ret; } reg = 0; if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num) reg |= WILC_HAVE_SDIO_IRQ_GPIO; ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg); - if (!ret) { + if (ret) { release_bus(wilc, WILC_BUS_RELEASE_ONLY); - return -EIO; + return ret; } wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT); ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid); - if (!ret) { + if (ret) { release_bus(wilc, WILC_BUS_RELEASE_ONLY); - return -EIO; + return ret; } wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); @@ -902,7 +900,7 @@ int wilc_wlan_start(struct wilc *wilc) wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); release_bus(wilc, WILC_BUS_RELEASE_ONLY); - return (ret < 0) ? ret : 0; + return ret; } int wilc_wlan_stop(struct wilc *wilc, struct wilc_vif *vif) @@ -913,33 +911,33 @@ int wilc_wlan_stop(struct wilc *wilc, struct wilc_vif *vif) acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®); - if (!ret) { + if (ret) { netdev_err(vif->ndev, "Error while reading reg\n"); release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); - return -EIO; + return ret; } ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0, (reg | WILC_ABORT_REQ_BIT)); - if (!ret) { + if (ret) { netdev_err(vif->ndev, "Error while writing reg\n"); release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); - return -EIO; + return ret; } ret = wilc->hif_func->hif_read_reg(wilc, WILC_FW_HOST_COMM, ®); - if (!ret) { + if (ret) { netdev_err(vif->ndev, "Error while reading reg\n"); release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); - return -EIO; + return ret; } reg = BIT(0); ret = wilc->hif_func->hif_write_reg(wilc, WILC_FW_HOST_COMM, reg); - if (!ret) { + if (ret) { netdev_err(vif->ndev, "Error while writing reg\n"); release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); - return -EIO; + return ret; } release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); @@ -1112,10 +1110,11 @@ int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids, return ret; } -static u32 init_chip(struct net_device *dev) +static int init_chip(struct net_device *dev) { u32 chipid; - u32 reg, ret = 0; + u32 reg; + int ret = 0; struct wilc_vif *vif = netdev_priv(dev); struct wilc *wilc = vif->wilc; @@ -1125,18 +1124,18 @@ static u32 init_chip(struct net_device *dev) if ((chipid & 0xfff) != 0xa0) { ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, ®); - if (!ret) { + if (ret) { netdev_err(dev, "fail read reg 0x1118\n"); goto release; } reg |= BIT(0); ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg); - if (!ret) { + if (ret) { netdev_err(dev, "fail write reg 0x1118\n"); goto release; } ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71); - if (!ret) { + if (ret) { netdev_err(dev, "fail write reg 0xc0000\n"); goto release; } @@ -1186,7 +1185,7 @@ int wilc_wlan_init(struct net_device *dev) wilc->quit = 0; - if (!wilc->hif_func->hif_init(wilc, false)) { + if (wilc->hif_func->hif_init(wilc, false)) { ret = -EIO; goto fail; } @@ -1207,12 +1206,12 @@ int wilc_wlan_init(struct net_device *dev) goto fail; } - if (!init_chip(dev)) { + if (init_chip(dev)) { ret = -EIO; goto fail; } - return 1; + return 0; fail: -- 2.24.0 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
