[PATCH v11 14/23] cxl/pci: Update cxl_handle_cor_ras() to return early if no RAS errors

Terry Bowman
2025-08-27T01:38:27Z

Update cxl_handle_cor_ras() to exit early in the case there is no RAS
errors detected after applying the status mask. This change will make
the correctable handler's implementation consistent with the uncorrectable
handler, cxl_handle_ras().

Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>

---
Changes v10->v11:
- Added Dave Jiang and Jonathan Cameron's review-by
- Changes moved to core/ras.c
---
drivers/cxl/core/ras.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/cxl/core/ras.c b/drivers/cxl/core/ras.c
index fda3b0a64dab..69559043b772 100644
--- a/drivers/cxl/core/ras.c
+++ b/drivers/cxl/core/ras.c
@@ -296,10 +296,11 @@ static void cxl_handle_cor_ras(struct device *dev, u64 serial, void __iomem *ras

addr = ras_base + CXL_RAS_CORRECTABLE_STATUS_OFFSET;
status = readl(addr);
- if (status & CXL_RAS_CORRECTABLE_STATUS_MASK) {
- writel(status & CXL_RAS_CORRECTABLE_STATUS_MASK, addr);
- trace_cxl_aer_correctable_error(dev, status, serial);
- }
+ if (!(status & CXL_RAS_CORRECTABLE_STATUS_MASK))
+ return;
+ writel(status & CXL_RAS_CORRECTABLE_STATUS_MASK, addr);
+
+ trace_cxl_aer_correctable_error(dev, status, serial);
}

/* CXL spec rev3.0 8.2.4.16.1 */
--
2.51.0.rc2.21.ge5ab6b3e5a