The error path in the gain_to_scaletables() uses goto for unwinding an
allocation on failure. This can be slightly simplified by using the
automated free when exiting the scope.
Use __free(kfree) and drop the goto based error handling.
Signed-off-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx>
---
Revision history:
v1 => v2:
- patch number changed because a change was added to the series.
- rebased on iio/testing to avoid conflicts with queued fixes
---
drivers/iio/industrialio-gts-helper.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c
index 291c0fc332c9..602d3d338e66 100644
--- a/drivers/iio/industrialio-gts-helper.c
+++ b/drivers/iio/industrialio-gts-helper.c
@@ -4,6 +4,7 @@
* Copyright (c) 2023 Matti Vaittinen <mazziesaccount@xxxxxxxxx>
*/
+#include <linux/cleanup.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/export.h>
@@ -167,8 +168,8 @@ static int iio_gts_gain_cmp(const void *a, const void *b)
static int gain_to_scaletables(struct iio_gts *gts, int **gains, int **scales)
{
- int i, j, new_idx, time_idx, ret = 0;
- int *all_gains;
+ int ret, i, j, new_idx, time_idx;
+ int *all_gains __free(kfree) = NULL;
size_t gain_bytes;
for (i = 0; i < gts->num_itime; i++) {
@@ -232,10 +233,9 @@ static int gain_to_scaletables(struct iio_gts *gts, int **gains, int **scales)
gts->avail_all_scales_table = kcalloc(new_idx, 2 * sizeof(int),
GFP_KERNEL);
- if (!gts->avail_all_scales_table) {
- ret = -ENOMEM;
- goto free_out;
- }
+ if (!gts->avail_all_scales_table)
+ return -ENOMEM;
+
gts->num_avail_all_scales = new_idx;
for (i = 0; i < gts->num_avail_all_scales; i++) {
@@ -246,14 +246,11 @@ static int gain_to_scaletables(struct iio_gts *gts, int **gains, int **scales)
if (ret) {
kfree(gts->avail_all_scales_table);
gts->num_avail_all_scales = 0;
- goto free_out;
+ return ret;
}
}
-free_out:
- kfree(all_gains);
-
- return ret;
+ return 0;
}
/**
--
2.47.0
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