system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-18 17:29:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

mmc: core: Specify timeouts for BKOPS and CACHE_FLUSH for eMMC

Browse source 
The timeout values used while waiting for a CMD6 for BKOPS or a CACHE_FLUSH
to complete, are not defined by the eMMC spec. However, a timeout of 10
minutes as is currently being used, is just silly for both of these cases.
Instead, let's specify more reasonable timeouts, 120s for BKOPS and 30s for
CACHE_FLUSH.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20200122142747.5690-2-ulf.hansson@linaro.org
This commit is contained in:
Ulf Hansson 2020-01-22 15:27:45 +01:00
parent 1d45a3f47c
commit 24ed3bd01d
1 changed files with 6 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/mmc/core/mmc_ops.c
View file

@ -19,7 +19,9 @@
#include "host.h"
#include "mmc_ops.h"
#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */
#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10min*/
#define MMC_BKOPS_TIMEOUT_MS (120 * 1000) /* 120s */
#define MMC_CACHE_FLUSH_TIMEOUT_MS (30 * 1000) /* 30s */
static const u8 tuning_blk_pattern_4bit[] = {
0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
@ -941,7 +943,7 @@ void mmc_run_bkops(struct mmc_card *card)
* urgent levels by using an asynchronous background task, when idle.
*/
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BKOPS_START, 1, MMC_OPS_TIMEOUT_MS);
EXT_CSD_BKOPS_START, 1, MMC_BKOPS_TIMEOUT_MS);
if (err)
pr_warn("%s: Error %d starting bkops\n",
mmc_hostname(card->host), err);
@ -961,7 +963,8 @@ int mmc_flush_cache(struct mmc_card *card)
(card->ext_csd.cache_size > 0) &&
(card->ext_csd.cache_ctrl & 1)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_FLUSH_CACHE, 1, 0);
EXT_CSD_FLUSH_CACHE, 1,
MMC_CACHE_FLUSH_TIMEOUT_MS);
if (err)
pr_err("%s: cache flush error %d\n",
mmc_hostname(card->host), err);