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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-05-01 09:30:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-05-01 09:30:47 -0700 |
| commit | d4af0c17235fbf992f5023bbfb84303e082e45a6 (patch) | |
| tree | 0e0d24dd50b5ad2e8be7929957f3291ddc1a001f | |
| parent | 57ae8a492116910bad2b3497ffe555b3a4b4180f (diff) | |
| parent | c7d2f89fea26c84d5accc55d9976dd7e5305e63a (diff) | |
| download | linux-d4af0c17235fbf992f5023bbfb84303e082e45a6.tar.bz2 | |
Merge tag 'irq_urgent_for_v5.18_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Borislav Petkov:
- Fix locking when accessing device MSI descriptors
* tag 'irq_urgent_for_v5.18_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
bus: fsl-mc-msi: Fix MSI descriptor mutex lock for msi_first_desc()
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-msi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c index 5e0e4393ce4d..0cfe859a4ac4 100644 --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -224,8 +224,12 @@ int fsl_mc_msi_domain_alloc_irqs(struct device *dev, unsigned int irq_count) if (error) return error; + msi_lock_descs(dev); if (msi_first_desc(dev, MSI_DESC_ALL)) - return -EINVAL; + error = -EINVAL; + msi_unlock_descs(dev); + if (error) + return error; /* * NOTE: Calling this function will trigger the invocation of the |