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openmptcprouter/6.12/target/linux/bcm27xx/patches-6.12/950-0441-drivers-mmc-core-handle-card-removal-when-running-CQ.patch
Ycarus (Yannick Chabanois) bdb9b0046f Add bcm27xx 6.12 test support
2024-12-20 14:17:26 +01:00

43 lines
1.5 KiB
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From db0e26071c3121b66e4d11fc9d06297b525a170e Mon Sep 17 00:00:00 2001
From: Jonathan Bell <jonathan@raspberrypi.com>
Date: Thu, 13 Jun 2024 15:05:40 +0100
Subject: [PATCH 441/697] drivers: mmc: core: handle card-removal when running
CQE recovery
Recovery claims the MMC card so the card-detect work gets significantly
delayed - leading to lots of error recovery loops that can never do
anything but fail.
Explicitly detect the card after CQE has halted and bail if it's not
there.
Also ratelimit a not-very-descriptive warning - one occurrence in dmesg
is enough to signal that something is amiss.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
---
drivers/mmc/core/core.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -543,10 +543,18 @@ int mmc_cqe_recovery(struct mmc_host *ho
* Recovery is expected seldom, if at all, but it reduces performance,
* so make sure it is not completely silent.
*/
- pr_warn("%s: running CQE recovery\n", mmc_hostname(host));
+ pr_warn_ratelimited("%s: running CQE recovery\n", mmc_hostname(host));
host->cqe_ops->cqe_recovery_start(host);
+ err = mmc_detect_card_removed(host);
+ if (err) {
+ host->cqe_ops->cqe_recovery_finish(host);
+ host->cqe_ops->cqe_off(host);
+ mmc_retune_release(host);
+ return err;
+ }
+
memset(&cmd, 0, sizeof(cmd));
cmd.opcode = MMC_STOP_TRANSMISSION;
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;