diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-09-07 17:37:52 +0200 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-09-08 18:00:15 +0200 |
| commit | 9d8f86b56093d7b06d81d4063d5b9a4cbf887e75 (patch) | |
| tree | cb08f02760fb6cc5c34f7b1bdbb54aad0e001a70 | |
| parent | spi/spi_s3c64xx: Move to subsys_initcall() (diff) | |
| download | linux-9d8f86b56093d7b06d81d4063d5b9a4cbf887e75.tar.xz linux-9d8f86b56093d7b06d81d4063d5b9a4cbf887e75.zip | |
spi/spi_s3c64xx: Increase dead reckoning time in wait_for_xfer()
For small transfers at high speeds the expected transfer time can easily
be well under 1ms, causing the delay in wait_for_xfer() to be only the
dead reckoning fudge factor of 5ms currently included. Experiments on
some of my systems shows that this is marginal for some transfers so
double it to 10ms.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| -rw-r--r-- | drivers/spi/spi_s3c64xx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c index a4c480551e5f..8130f02dc466 100644 --- a/drivers/spi/spi_s3c64xx.c +++ b/drivers/spi/spi_s3c64xx.c @@ -320,7 +320,7 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd, /* millisecs to xfer 'len' bytes @ 'cur_speed' */ ms = xfer->len * 8 * 1000 / sdd->cur_speed; - ms += 5; /* some tolerance */ + ms += 10; /* some tolerance */ if (dma_mode) { val = msecs_to_jiffies(ms) + 10; |