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EDAC/sb: Use kzalloc_flex()

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Simplifies allocations by using a flexible array member in this struct.

Add __counted_by to get extra runtime analysis. Move counting variable
assignment immediately after allocation as required by __counted_by.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Link: https://patch.msgid.link/20260313215637.6371-1-rosenp@gmail.com
This commit is contained in:
Rosen Penev
2026-03-13 14:56:37 -07:00
committed by Tony Luck
parent 7cbea96f66
commit f42f3076dd
1 changed files with 3 additions and 11 deletions
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14
drivers/edac/sb_edac.c
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@@ -364,11 +364,11 @@ struct sbridge_dev {
int seg;
u8 bus, mc;
u8 node_id, source_id;
struct pci_dev **pdev;
enum domain dom;
int n_devs;
int i_devs;
struct mem_ctl_info *mci;
struct pci_dev *pdev[] __counted_by(n_devs);
};
struct knl_pvt {
@@ -771,21 +771,14 @@ static struct sbridge_dev *alloc_sbridge_dev(int seg, u8 bus, enum domain dom,
{
struct sbridge_dev *sbridge_dev;
sbridge_dev = kzalloc_obj(*sbridge_dev);
sbridge_dev = kzalloc_flex(*sbridge_dev, pdev, table->n_devs_per_imc);
if (!sbridge_dev)
return NULL;
sbridge_dev->pdev = kzalloc_objs(*sbridge_dev->pdev,
table->n_devs_per_imc);
if (!sbridge_dev->pdev) {
kfree(sbridge_dev);
return NULL;
}
sbridge_dev->n_devs = table->n_devs_per_imc;
sbridge_dev->seg = seg;
sbridge_dev->bus = bus;
sbridge_dev->dom = dom;
sbridge_dev->n_devs = table->n_devs_per_imc;
list_add_tail(&sbridge_dev->list, &sbridge_edac_list);
return sbridge_dev;
@@ -794,7 +787,6 @@ static struct sbridge_dev *alloc_sbridge_dev(int seg, u8 bus, enum domain dom,
static void free_sbridge_dev(struct sbridge_dev *sbridge_dev)
{
list_del(&sbridge_dev->list);
kfree(sbridge_dev->pdev);
kfree(sbridge_dev);
}