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authorIra Weiny <ira.weiny@intel.com>2023-05-17 14:28:11 -0700
committerDan Williams <dan.j.williams@intel.com>2023-09-15 22:02:04 -0700
commit1b27978d69670282a1586465de640cff363a34d8 (patch)
tree8158457c3fe1c2ebef8b4900a3790ceb24a725b9 /drivers/cxl/pci.c
parent7914992b37d5a4b165e65a32a7723afde9356720 (diff)
cxl/pci: Update comment
The existence of struct cxl_dev_id containing a single member is odd. The comment made sense when I wrote it but could be clarified. Update the comment and place it next to the odd looking structure. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20230426-cxl-fixes-v1-2-870c4c8b463a@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/pci.c')
-rw-r--r--drivers/cxl/pci.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 44a21ab7add5..2061e278e47b 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -85,6 +85,10 @@ static int cxl_pci_mbox_wait_for_doorbell(struct cxl_dev_state *cxlds)
status & CXLMDEV_DEV_FATAL ? " fatal" : "", \
status & CXLMDEV_FW_HALT ? " firmware-halt" : "")
+/*
+ * Threaded irq dev_id's must be globally unique. cxl_dev_id provides a unique
+ * wrapper object for each irq within the same cxlds.
+ */
struct cxl_dev_id {
struct cxl_dev_state *cxlds;
};
@@ -95,7 +99,6 @@ static int cxl_request_irq(struct cxl_dev_state *cxlds, int irq,
struct device *dev = cxlds->dev;
struct cxl_dev_id *dev_id;
- /* dev_id must be globally unique and must contain the cxlds */
dev_id = devm_kzalloc(dev, sizeof(*dev_id), GFP_KERNEL);
if (!dev_id)
return -ENOMEM;