[PATCH V6 05/20] platform/x86/intel/vsec: Use cleanup.h

David E. Box
2023-11-29T22:22:38Z

Use cleanup.h helpers to handle cleanup of resources in
intel_vsec_add_dev() after failures.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
V6 - No change

V5 - Assign no_free_ptr(res) to resource member. This fixes __must_check_fn
warning.
- Remove unsed ret variable.

V4 - Do no_free_ptr() before and in call to intel_vsec_add_aux().
- Add resource cleanup in this patch.

V3 - New patch.

drivers/platform/x86/intel/vsec.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c
index ba352af65dde..27e8698ebe5e 100644
--- a/drivers/platform/x86/intel/vsec.c
+++ b/drivers/platform/x86/intel/vsec.c
@@ -15,6 +15,7 @@

#include <linux/auxiliary_bus.h>
#include <linux/bits.h>
+#include <linux/cleanup.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/idr.h>
@@ -147,8 +148,9 @@ EXPORT_SYMBOL_NS_GPL(intel_vsec_add_aux, INTEL_VSEC);
static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *header,
struct intel_vsec_platform_info *info)
{
- struct intel_vsec_device *intel_vsec_dev;
- struct resource *res, *tmp;
+ struct intel_vsec_device __free(kfree) *intel_vsec_dev = NULL;
+ struct resource __free(kfree) *res = NULL;
+ struct resource *tmp;
unsigned long quirks = info->quirks;
int i;

@@ -170,10 +172,8 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
return -ENOMEM;

res = kcalloc(header->num_entries, sizeof(*res), GFP_KERNEL);
- if (!res) {
- kfree(intel_vsec_dev);
+ if (!res)
return -ENOMEM;
- }

if (quirks & VSEC_QUIRK_TABLE_SHIFT)
header->offset >>= TABLE_OFFSET_SHIFT;
@@ -191,7 +191,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
}

intel_vsec_dev->pcidev = pdev;
- intel_vsec_dev->resource = res;
+ intel_vsec_dev->resource = no_free_ptr(res);
intel_vsec_dev->num_resources = header->num_entries;
intel_vsec_dev->quirks = info->quirks;

@@ -200,7 +200,11 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
else
intel_vsec_dev->ida = &intel_vsec_ida;

- return intel_vsec_add_aux(pdev, NULL, intel_vsec_dev,
+ /*
+ * Pass the ownership of intel_vsec_dev and resource within it to
+ * intel_vsec_add_aux()
+ */
+ return intel_vsec_add_aux(pdev, NULL, no_free_ptr(intel_vsec_dev),
intel_vsec_name(header->id));
}

--
2.34.1