If a port interrupt setup fails after at least one port has already been successfully initialized, the gotos miss some resource releasing: - the already initialized PTP IRQs aren't released - the already initialized port IRQs aren't released if the failure occurs in ksz_pirq_setup().
Merge out_ptpirq, out_pirq and out_girq into a single label that releases all IRQ resources for all initialized ports. Free the port IRQ inside the initialization loop when ksz_ptp_irq_setup() fails, since the error path only iterates over the 'fully' initialized ports.
Cc: stable@vger.kernel.org Fixes: c9cd961c0d43 ("net: dsa: microchip: lan937x: add interrupt support for port phy link") Signed-off-by: Bastien Curutchet (Schneider Electric) bastien.curutchet@bootlin.com --- drivers/net/dsa/microchip/ksz_common.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 49827ac770e6fcc9e4a1a11e8814cdd90b17473e..1cb4f35edb49ba4f35ec3ae80fe1699d31540d96 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -3036,12 +3036,14 @@ static int ksz_setup(struct dsa_switch *ds) dsa_switch_for_each_user_port(dp, dev->ds) { ret = ksz_pirq_setup(dev, dp->index); if (ret) - goto out_girq; + goto port_release;
if (dev->info->ptp_capable) { ret = ksz_ptp_irq_setup(ds, dp->index); - if (ret) - goto out_pirq; + if (ret) { + ksz_irq_free(&dev->ports[dp->index].pirq); + goto port_release; + } } } } @@ -3051,7 +3053,7 @@ static int ksz_setup(struct dsa_switch *ds) if (ret) { dev_err(dev->dev, "Failed to register PTP clock: %d\n", ret); - goto out_ptpirq; + goto port_release; } }
@@ -3074,17 +3076,15 @@ static int ksz_setup(struct dsa_switch *ds) out_ptp_clock_unregister: if (dev->info->ptp_capable) ksz_ptp_clock_unregister(ds); -out_ptpirq: - if (dev->irq > 0 && dev->info->ptp_capable) - dsa_switch_for_each_user_port(dp, dev->ds) - ksz_ptp_irq_free(ds, dp->index); -out_pirq: - if (dev->irq > 0) - dsa_switch_for_each_user_port_continue_reverse(dp, dev->ds) +port_release: + if (dev->irq > 0) { + dsa_switch_for_each_user_port_continue_reverse(dp, dev->ds) { + if (dev->info->ptp_capable) + ksz_ptp_irq_free(ds, dp->index); ksz_irq_free(&dev->ports[dp->index].pirq); -out_girq: - if (dev->irq > 0) + } ksz_irq_free(&dev->girq); + }
return ret; }