summaryrefslogtreecommitdiff
path: root/drivers/mmc
diff options
context:
space:
mode:
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-06-23 13:17:31 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2021-08-24 11:15:31 +0300
commit696068470e38e4bd710c1dea5f0a2a835daf9388 (patch)
treec10771fda295c703ed616da6843a4213187fa205 /drivers/mmc
parent575cf1046923690c1821cd33c55dc641937404cf (diff)
downloadlinux-696068470e38e4bd710c1dea5f0a2a835daf9388.tar.xz
mmc: mmc_spi: Simplify busy loop in mmc_spi_skip()
Infinite loops are hard to read and understand because of hidden main loop condition. Simplify such one in mmc_spi_skip(). Using schedule() to schedule (and be friendly to others) is discouraged and cond_resched() should be used instead. Hence, replace schedule() with cond_resched() at the same time. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210623101731.87885-1-andriy.shevchenko@linux.intel.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/mmc_spi.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 65c65bb5737f..a1bcde3395a6 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -180,7 +180,7 @@ static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,
u8 *cp = host->data->status;
unsigned long start = jiffies;
- while (1) {
+ do {
int status;
unsigned i;
@@ -193,16 +193,9 @@ static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,
return cp[i];
}
- if (time_is_before_jiffies(start + timeout))
- break;
-
- /* If we need long timeouts, we may release the CPU.
- * We use jiffies here because we want to have a relation
- * between elapsed time and the blocking of the scheduler.
- */
- if (time_is_before_jiffies(start + 1))
- schedule();
- }
+ /* If we need long timeouts, we may release the CPU */
+ cond_resched();
+ } while (time_is_after_jiffies(start + timeout));
return -ETIMEDOUT;
}