when analyse tuples failed, may enter an endless loop，so limit the time of retries.
Signed-off-by: Fengnan Chang <fengnanchang@xxxxxxxxx>
---
drivers/mmc/core/sdio_cis.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index dcb3dee59fa5..47423a6d13fb 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -266,6 +266,7 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
do {
unsigned char tpl_code, tpl_link;
+ u64 timeout = get_jiffies_64() + 10 * HZ;
ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
if (ret)
@@ -318,6 +319,8 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
prev = &this->next;
if (ret == -ENOENT) {
+ if (time_after64(get_jiffies_64(), timeout))
+ break;
/* warn about unknown tuples */
pr_warn_ratelimited("%s: queuing unknown"
" CIS tuple 0x%02x (%u bytes)\n",
--
2.25.1
