diff options
| author | Eddie James <eajames@linux.ibm.com> | 2022-06-23 17:05:47 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-06-23 17:48:21 +0300 |
| commit | 40308f9642a85c30fa7cc5ab8672020cb96ecb66 (patch) | |
| tree | 8b7bc34a2e62e280d7d5fb837f865c72567f9bf3 /drivers/spi/spi-fsi.c | |
| parent | 26f30e3ee1bf120af1bde22d890e46a0c8dbeca0 (diff) | |
| download | linux-40308f9642a85c30fa7cc5ab8672020cb96ecb66.tar.xz | |
spi: fsi: Increase timeout and ensure status is checked
Only timeout after at least one iteration of checking the
status registers. In addition, increase the transfer timeout
to 1 second.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20220623140547.71762-1-eajames@linux.ibm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-fsi.c')
| -rw-r--r-- | drivers/spi/spi-fsi.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/spi/spi-fsi.c b/drivers/spi/spi-fsi.c index 72ab066ce552..cf1e4f9ebd72 100644 --- a/drivers/spi/spi-fsi.c +++ b/drivers/spi/spi-fsi.c @@ -24,8 +24,7 @@ #define FSI2SPI_IRQ 0x20 #define SPI_FSI_BASE 0x70000 -#define SPI_FSI_INIT_TIMEOUT_MS 1000 -#define SPI_FSI_STATUS_TIMEOUT_MS 100 +#define SPI_FSI_TIMEOUT_MS 1000 #define SPI_FSI_MAX_RX_SIZE 8 #define SPI_FSI_MAX_TX_SIZE 40 @@ -299,6 +298,7 @@ static void fsi_spi_sequence_init(struct fsi_spi_sequence *seq) static int fsi_spi_transfer_data(struct fsi_spi *ctx, struct spi_transfer *transfer) { + int loops; int rc = 0; unsigned long end; u64 status = 0ULL; @@ -317,9 +317,10 @@ static int fsi_spi_transfer_data(struct fsi_spi *ctx, if (rc) return rc; - end = jiffies + msecs_to_jiffies(SPI_FSI_STATUS_TIMEOUT_MS); + loops = 0; + end = jiffies + msecs_to_jiffies(SPI_FSI_TIMEOUT_MS); do { - if (time_after(jiffies, end)) + if (loops++ && time_after(jiffies, end)) return -ETIMEDOUT; rc = fsi_spi_status(ctx, &status, "TX"); @@ -335,9 +336,10 @@ static int fsi_spi_transfer_data(struct fsi_spi *ctx, u8 *rx = transfer->rx_buf; while (transfer->len > recv) { - end = jiffies + msecs_to_jiffies(SPI_FSI_STATUS_TIMEOUT_MS); + loops = 0; + end = jiffies + msecs_to_jiffies(SPI_FSI_TIMEOUT_MS); do { - if (time_after(jiffies, end)) + if (loops++ && time_after(jiffies, end)) return -ETIMEDOUT; rc = fsi_spi_status(ctx, &status, "RX"); @@ -359,6 +361,7 @@ static int fsi_spi_transfer_data(struct fsi_spi *ctx, static int fsi_spi_transfer_init(struct fsi_spi *ctx) { + int loops = 0; int rc; bool reset = false; unsigned long end; @@ -369,9 +372,9 @@ static int fsi_spi_transfer_init(struct fsi_spi *ctx) SPI_FSI_CLOCK_CFG_SCK_NO_DEL | FIELD_PREP(SPI_FSI_CLOCK_CFG_SCK_DIV, 19); - end = jiffies + msecs_to_jiffies(SPI_FSI_INIT_TIMEOUT_MS); + end = jiffies + msecs_to_jiffies(SPI_FSI_TIMEOUT_MS); do { - if (time_after(jiffies, end)) + if (loops++ && time_after(jiffies, end)) return -ETIMEDOUT; rc = fsi_spi_read_reg(ctx, SPI_FSI_STATUS, &status); |