From: Ajay Singh <ajay.kathat@xxxxxxxxxxxxx>
Sometimes during wake-up sequence, clockless register status is not
correct even when the operation is successful. Suppress error for
clockless register so that wake-up sequence is successful.
Signed-off-by: Ajay Singh <ajay.kathat@xxxxxxxxxxxxx>
---
drivers/net/wireless/microchip/wilc1000/spi.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 95228dc2d7e0..4f5464170426 100644
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c
@@ -470,7 +470,7 @@ static int wilc_spi_single_read(struct wilc *wilc, u8 cmd, u32 adr, void *b,
}
r = (struct wilc_spi_rsp_data *)&rb[cmd_len];
- if (r->rsp_cmd_type != cmd) {
+ if (r->rsp_cmd_type != cmd && !clockless) {
if (!spi_priv->probing_crc)
dev_err(&spi->dev,
"Failed cmd, cmd (%02x), resp (%02x)\n",
@@ -478,7 +478,7 @@ static int wilc_spi_single_read(struct wilc *wilc, u8 cmd, u32 adr, void *b,
return -EINVAL;
}
- if (r->status != WILC_SPI_COMMAND_STAT_SUCCESS) {
+ if (r->status != WILC_SPI_COMMAND_STAT_SUCCESS && !clockless) {
dev_err(&spi->dev, "Failed cmd state response state (%02x)\n",
r->status);
return -EINVAL;
@@ -567,14 +567,18 @@ static int wilc_spi_write_cmd(struct wilc *wilc, u8 cmd, u32 adr, u32 data,
}
r = (struct wilc_spi_rsp_data *)&rb[cmd_len];
- if (r->rsp_cmd_type != cmd) {
+ /*
+ * Clockless registers operations might return unexptected responses,
+ * even if successful.
+ */
+ if (r->rsp_cmd_type != cmd && !clockless) {
dev_err(&spi->dev,
"Failed cmd response, cmd (%02x), resp (%02x)\n",
cmd, r->rsp_cmd_type);
return -EINVAL;
}
- if (r->status != WILC_SPI_COMMAND_STAT_SUCCESS) {
+ if (r->status != WILC_SPI_COMMAND_STAT_SUCCESS && !clockless) {
dev_err(&spi->dev, "Failed cmd state response state (%02x)\n",
r->status);
return -EINVAL;
--
2.24.0
