@@ -202,7 +202,7 @@ static int octep_request_irqs(struct octep_device *oct)
struct msix_entry *msix_entry;
char **non_ioq_msix_names;
int num_non_ioq_msix;
- int ret, i;
+ int ret, i, j;
num_non_ioq_msix = CFG_GET_NON_IOQ_MSIX(oct->conf);
non_ioq_msix_names = CFG_GET_NON_IOQ_MSIX_NAMES(oct->conf);
@@ -233,23 +233,23 @@ static int octep_request_irqs(struct octep_device *oct)
}
/* Request IRQs for Tx/Rx queues */
- for (i = 0; i < oct->num_oqs; i++) {
- ioq_vector = oct->ioq_vector[i];
- msix_entry = &oct->msix_entries[i + num_non_ioq_msix];
+ for (j = 0; j < oct->num_oqs; j++) {
+ ioq_vector = oct->ioq_vector[j];
+ msix_entry = &oct->msix_entries[j + num_non_ioq_msix];
snprintf(ioq_vector->name, sizeof(ioq_vector->name),
- "%s-q%d", netdev->name, i);
+ "%s-q%d", netdev->name, j);
ret = request_irq(msix_entry->vector,
octep_ioq_intr_handler, 0,
ioq_vector->name, ioq_vector);
if (ret) {
netdev_err(netdev,
"request_irq failed for Q-%d; err=%d",
- i, ret);
+ j, ret);
goto ioq_irq_err;
}
- cpumask_set_cpu(i % num_online_cpus(),
+ cpumask_set_cpu(j % num_online_cpus(),
&ioq_vector->affinity_mask);
irq_set_affinity_hint(msix_entry->vector,
&ioq_vector->affinity_mask);
@@ -257,10 +257,13 @@ static int octep_request_irqs(struct octep_device *oct)
return 0;
ioq_irq_err:
- while (i > num_non_ioq_msix) {
- --i;
- irq_set_affinity_hint(oct->msix_entries[i].vector, NULL);
- free_irq(oct->msix_entries[i].vector, oct->ioq_vector[i]);
+ while (j) {
+ --j;
+ ioq_vector = oct->ioq_vector[j];
+ msix_entry = &oct->msix_entries[j + num_non_ioq_msix];
+
+ irq_set_affinity_hint(msix_entry->vector, NULL);
+ free_irq(msix_entry->vector, ioq_vector);
}
non_ioq_irq_err:
while (i) {
When taken, the error handling path does not undo correctly what has already been allocated. Introduce a new loop index, 'j', in order to simplify the error handling path and rewrite part of it. It is now written with the same logic and intermediate variables used when resources are allocated. This is much more straightforward. Fixes: 37d79d059606 ("octeon_ep: add Tx/Rx processing and interrupt support") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- v2: Introduce 'j' and use it in the 2nd for loop Rewrite the error handling path (Dan Carpenter) v1: https://lore.kernel.org/all/a1b6f082fff4e68007914577961113bc452c8030.1652629833.git.christophe.jaillet@wanadoo.fr/ --- .../ethernet/marvell/octeon_ep/octep_main.c | 25 +++++++++++-------- 1 file changed, 14 insertions(+), 11 deletions(-)