There were two paths in the code for "external" eeprom sources. The code in eeprom.c only handled the cases where the eeprom data was loaded via request_firmware. ahb.c and pci.c on the other hand had some duplicate code which was only used when the eeprom data was passed via ath9k_platform_data. With this change all eeprom data handling is now unified in eeprom.c. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> --- This supersedes the following patch by Eduardo Abinader <eduardo.abinader@xxxxxxxxxxxx>: "ath9k: return false when reading wrong eeprom offset" https://patchwork.kernel.org/patch/9181371/ drivers/net/wireless/ath/ath9k/ahb.c | 18 +++------------ drivers/net/wireless/ath/ath9k/eeprom.c | 19 +++++++++------ drivers/net/wireless/ath/ath9k/pci.c | 41 +++++++++++---------------------- 3 files changed, 28 insertions(+), 50 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c index bd4a1a6..bea6186 100644 --- a/drivers/net/wireless/ath/ath9k/ahb.c +++ b/drivers/net/wireless/ath/ath9k/ahb.c @@ -18,7 +18,6 @@ #include <linux/nl80211.h> #include <linux/platform_device.h> -#include <linux/ath9k_platform.h> #include <linux/module.h> #include "ath9k.h" @@ -58,20 +57,9 @@ static void ath_ahb_read_cachesize(struct ath_common *common, int *csz) static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data) { - struct ath_softc *sc = (struct ath_softc *)common->priv; - struct platform_device *pdev = to_platform_device(sc->dev); - struct ath9k_platform_data *pdata; - - pdata = dev_get_platdata(&pdev->dev); - if (off >= (ARRAY_SIZE(pdata->eeprom_data))) { - ath_err(common, - "%s: flash read failed, offset %08x is out of range\n", - __func__, off); - return false; - } - - *data = pdata->eeprom_data[off]; - return true; + ath_err(common, "%s: eeprom data has to be provided externally\n", + __func__); + return false; } static struct ath_bus_ops ath_ahb_bus_ops = { diff --git a/drivers/net/wireless/ath/ath9k/eeprom.c b/drivers/net/wireless/ath/ath9k/eeprom.c index a794157..ba1c8ba 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom.c +++ b/drivers/net/wireless/ath/ath9k/eeprom.c @@ -15,6 +15,7 @@ */ #include "hw.h" +#include <linux/ath9k_platform.h> void ath9k_hw_analog_shift_regwrite(struct ath_hw *ah, u32 reg, u32 val) { @@ -108,26 +109,30 @@ void ath9k_hw_usb_gen_fill_eeprom(struct ath_hw *ah, u16 *eep_data, } } -static bool ath9k_hw_nvram_read_blob(struct ath_hw *ah, u32 off, +static bool ath9k_hw_nvram_read_blob(u16 *blob, size_t blob_size, u32 offset, u16 *data) { - u16 *blob_data; - - if (off * sizeof(u16) > ah->eeprom_blob->size) + if (offset * sizeof(u16) > blob_size) return false; - blob_data = (u16 *)ah->eeprom_blob->data; - *data = blob_data[off]; + *data = blob[offset]; return true; } bool ath9k_hw_nvram_read(struct ath_hw *ah, u32 off, u16 *data) { struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_platform_data *pdata = ah->dev->platform_data; bool ret; if (ah->eeprom_blob) - ret = ath9k_hw_nvram_read_blob(ah, off, data); + ret = ath9k_hw_nvram_read_blob((u16 *) ah->eeprom_blob->data, + ah->eeprom_blob->size, off, + data); + else if (pdata && !pdata->use_eeprom && pdata->eeprom_data) + ret = ath9k_hw_nvram_read_blob(pdata->eeprom_data, + ARRAY_SIZE(pdata->eeprom_data), + off, data); else ret = common->bus_ops->eeprom_read(common, off, data); diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c index 7cdaf40..0dd454a 100644 --- a/drivers/net/wireless/ath/ath9k/pci.c +++ b/drivers/net/wireless/ath/ath9k/pci.c @@ -19,7 +19,6 @@ #include <linux/nl80211.h> #include <linux/pci.h> #include <linux/pci-aspm.h> -#include <linux/ath9k_platform.h> #include <linux/module.h> #include "ath9k.h" @@ -786,35 +785,21 @@ static void ath_pci_read_cachesize(struct ath_common *common, int *csz) static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data) { - struct ath_softc *sc = (struct ath_softc *) common->priv; - struct ath9k_platform_data *pdata = sc->dev->platform_data; - - if (pdata && !pdata->use_eeprom) { - if (off >= (ARRAY_SIZE(pdata->eeprom_data))) { - ath_err(common, - "%s: eeprom read failed, offset %08x is out of range\n", - __func__, off); - } - - *data = pdata->eeprom_data[off]; - } else { - struct ath_hw *ah = (struct ath_hw *) common->ah; - - common->ops->read(ah, AR5416_EEPROM_OFFSET + - (off << AR5416_EEPROM_S)); - - if (!ath9k_hw_wait(ah, - AR_EEPROM_STATUS_DATA, - AR_EEPROM_STATUS_DATA_BUSY | - AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, - AH_WAIT_TIMEOUT)) { - return false; - } - - *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), - AR_EEPROM_STATUS_DATA_VAL); + struct ath_hw *ah = (struct ath_hw *) common->ah; + + common->ops->read(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); + + if (!ath9k_hw_wait(ah, + AR_EEPROM_STATUS_DATA, + AR_EEPROM_STATUS_DATA_BUSY | + AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, + AH_WAIT_TIMEOUT)) { + return false; } + *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), + AR_EEPROM_STATUS_DATA_VAL); + return true; } -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
