[PATCH -next] ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait()
From: Wei Yongjun <hidden>
Date: 2018-06-05 09:10:07
Also in:
kernel-janitors, lkml
Subsystem:
char and misc drivers, ocxl (open coherent accelerator processor interface opencapi) driver, the rest · Maintainers:
Arnd Bergmann, Greg Kroah-Hartman, Mahesh J Salgaonkar, Linus Torvalds
Add the missing unlock before return from function
afu_ioctl_enable_p9_wait() in the error handling case.
Fixes: e948e06fc63a ("ocxl: Expose the thread_id needed for wait on POWER9")
Signed-off-by: Wei Yongjun <redacted>
---
drivers/misc/ocxl/file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index 33ae46c..e6a6074 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c@@ -139,8 +139,10 @@ static long afu_ioctl_enable_p9_wait(struct ocxl_context *ctx, // Locks both status & tidr mutex_lock(&ctx->status_mutex); if (!ctx->tidr) { - if (set_thread_tidr(current)) + if (set_thread_tidr(current)) { + mutex_unlock(&ctx->status_mutex); return -ENOENT; + } ctx->tidr = current->thread.tidr; }