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| author | Ingo Molnar <mingo@kernel.org> | 2016-07-07 08:35:28 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-07 08:35:28 (GMT) |
| commit | 4b4b20852d1009c5e8bc357b22353b62e3a241c7 (patch) | |
| tree | 1026418471fe10c5b9f2fdff8a6b49bf070938fc /drivers/spi/spi-sun6i.c | |
| parent | 5130213721d01b6632c255d4295a8102cbb58379 (diff) | |
| parent | f00c0afdfa625165a609513bc74164d56752ec3e (diff) | |
| download | linux-4b4b20852d1009c5e8bc357b22353b62e3a241c7.tar.xz | |
Merge branch 'timers/fast-wheel' into timers/core
Diffstat (limited to 'drivers/spi/spi-sun6i.c')
| -rw-r--r-- | drivers/spi/spi-sun6i.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 42e2c4b..7fce79a 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -160,6 +160,7 @@ static int sun6i_spi_transfer_one(struct spi_master *master, { struct sun6i_spi *sspi = spi_master_get_devdata(master); unsigned int mclk_rate, div, timeout; + unsigned int start, end, tx_time; unsigned int tx_len = 0; int ret = 0; u32 reg; @@ -269,9 +270,16 @@ static int sun6i_spi_transfer_one(struct spi_master *master, reg = sun6i_spi_read(sspi, SUN6I_TFR_CTL_REG); sun6i_spi_write(sspi, SUN6I_TFR_CTL_REG, reg | SUN6I_TFR_CTL_XCH); + tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U); + start = jiffies; timeout = wait_for_completion_timeout(&sspi->done, - msecs_to_jiffies(1000)); + msecs_to_jiffies(tx_time)); + end = jiffies; if (!timeout) { + dev_warn(&master->dev, + "%s: timeout transferring %u bytes@%iHz for %i(%i)ms", + dev_name(&spi->dev), tfr->len, tfr->speed_hz, + jiffies_to_msecs(end - start), tx_time); ret = -ETIMEDOUT; goto out; } |