github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-22 20:54:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mmc: sh_mmcif: initialize IRQ-thread mutex before requesting interrupt

Browse Source 
The threaded IRQ handler can run before devm_request_threaded_irq()
returns, but thread_lock was initialized afterwards. Initialize it before
requesting either interrupt.

Fixes: 8047310ee9 ("mmc: sh_mmcif: fix a race, causing an Oops on SMP")
Cc: stable@vger.kernel.org
Assisted-by: Codex:GPT-5
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Signed-off-by: Ulf Hansson <ulfh@kernel.org>
This commit is contained in:
Runyu Xiao 2026-09-02 22:09:26 +08:00 committed by Ulf Hansson
parent 08b54e16d5
commit d5ea0d226e
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/mmc/host/sh_mmcif.c
View File

@ -1461,6 +1461,7 @@ static int sh_mmcif_probe(struct platform_device *pdev)
host->pd = pdev;
spin_lock_init(&host->lock);
mutex_init(&host->thread_lock);
mmc->ops = &sh_mmcif_ops;
sh_mmcif_init_ocr(host);
@ -1515,8 +1516,6 @@ static int sh_mmcif_probe(struct platform_device *pdev)
goto err_clk;
}
mutex_init(&host->thread_lock);
ret = mmc_add_host(mmc);
if (ret < 0)
goto err_clk;