This is a note to let you know that I've just added the patch titled pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq() to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pinctrl-mcp23s08-fix-missing-unlock-on-error-in-mcp23s08_irq.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 884af72c90016cfccd5717439c86b48702cbf184 Mon Sep 17 00:00:00 2001 From: Zou Wei <zou_wei@xxxxxxxxxx> Date: Tue, 8 Jun 2021 14:34:08 +0800 Subject: pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq() From: Zou Wei <zou_wei@xxxxxxxxxx> commit 884af72c90016cfccd5717439c86b48702cbf184 upstream. Add the missing unlock before return from function mcp23s08_irq() in the error handling case. v1-->v2: remove the "return IRQ_HANDLED" line Fixes: 897120d41e7a ("pinctrl: mcp23s08: fix race condition in irq handler") Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Zou Wei <zou_wei@xxxxxxxxxx> Link: https://lore.kernel.org/r/1623134048-56051-1-git-send-email-zou_wei@xxxxxxxxxx Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/pinctrl/pinctrl-mcp23s08.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/pinctrl/pinctrl-mcp23s08.c +++ b/drivers/pinctrl/pinctrl-mcp23s08.c @@ -461,7 +461,7 @@ static irqreturn_t mcp23s08_irq(int irq, if (intf == 0) { /* There is no interrupt pending */ - return IRQ_HANDLED; + goto unlock; } if (mcp_read(mcp, MCP_INTCAP, &intcap)) Patches currently in stable-queue which might be from zou_wei@xxxxxxxxxx are queue-5.4/pinctrl-mcp23s08-fix-missing-unlock-on-error-in-mcp23s08_irq.patch queue-5.4/misdn-fix-possible-use-after-free-in-hfc_cleanup.patch queue-5.4/atm-nicstar-fix-possible-use-after-free-in-nicstar_c.patch queue-5.4/atm-iphase-fix-possible-use-after-free-in-ia_module_.patch queue-5.4/drm-bridge-cdns-fix-pm-reference-leak-in-cdns_dsi_tr.patch queue-5.4/cw1200-add-missing-module_device_table.patch