diff options
| author | Mark Brown <broonie@kernel.org> | 2021-01-13 17:56:59 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-01-13 17:56:59 +0000 |
| commit | 2d446c98cde3ffccfd14849b7dda4194ab62dd20 (patch) | |
| tree | 9b7f048dcddec04d94527132834fc056745fdb6d /drivers/spi/spi.c | |
| parent | 44a4cfad8d78efcda9ec0dd97ceea38d8b602f24 (diff) | |
| parent | 7c53f6b671f4aba70ff15e1b05148b10d58c2837 (diff) | |
Merge v5.11-rc3
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 51d7c004fbab..720ab34784c1 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1108,6 +1108,7 @@ static int spi_transfer_wait(struct spi_controller *ctlr, { struct spi_statistics *statm = &ctlr->statistics; struct spi_statistics *stats = &msg->spi->statistics; + u32 speed_hz = xfer->speed_hz; unsigned long long ms; if (spi_controller_is_slave(ctlr)) { @@ -1116,8 +1117,11 @@ static int spi_transfer_wait(struct spi_controller *ctlr, return -EINTR; } } else { + if (!speed_hz) + speed_hz = 100000; + ms = 8LL * 1000LL * xfer->len; - do_div(ms, xfer->speed_hz); + do_div(ms, speed_hz); ms += ms + 200; /* some tolerance */ if (ms > UINT_MAX) @@ -3378,8 +3382,9 @@ int spi_setup(struct spi_device *spi) if (status) return status; - if (!spi->max_speed_hz || - spi->max_speed_hz > spi->controller->max_speed_hz) + if (spi->controller->max_speed_hz && + (!spi->max_speed_hz || + spi->max_speed_hz > spi->controller->max_speed_hz)) spi->max_speed_hz = spi->controller->max_speed_hz; mutex_lock(&spi->controller->io_mutex); |