| Message ID | 1462619832-5177-3-git-send-email-geert+renesas@glider.be |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | David Miller |
| Headers | show |
Hello. On 05/07/2016 02:17 PM, Geert Uytterhoeven wrote: > When reopening the network device on ra7795/salvator-x, e.g. after a > DHCP timeout: > > IP-Config: Reopening network devices... > genirq: Flags mismatch irq 139. 00000000 (eth0:ch24:emac) vs. 00000000 ( Unwrapped line this time? :-) > ravb e6800000.ethernet eth0: cannot request IRQ eth0:ch24:emac > IP-Config: Failed to open eth0 > IP-Config: No network devices available > > The "mismatch" is due to requesting an IRQ that is already in use, > while IRQF_PROBE_SHARED wasn't set. > > However, the real cause is that ravb_close() doesn't release any of the > R-Car Gen3-specific secondary IRQs. > > Add the missing free_irq() calls to fix this. > > Fixes: 22d4df8ff3a3cc72 ("ravb: Add support for r8a7795 SoC") > Fixes: f51bdc236b6c5835 ("ravb: Add dma queue interrupt support") > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> MBR, Sergei
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 34066e0649f5c673..867caf6e7a5a65ad 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1667,6 +1667,13 @@ static int ravb_close(struct net_device *ndev) priv->phydev = NULL; } + if (priv->chip_id != RCAR_GEN2) { + free_irq(priv->tx_irqs[RAVB_NC], ndev); + free_irq(priv->rx_irqs[RAVB_NC], ndev); + free_irq(priv->tx_irqs[RAVB_BE], ndev); + free_irq(priv->rx_irqs[RAVB_BE], ndev); + free_irq(priv->emac_irq, ndev); + } free_irq(ndev->irq, ndev); napi_disable(&priv->napi[RAVB_NC]);
When reopening the network device on ra7795/salvator-x, e.g. after a DHCP timeout: IP-Config: Reopening network devices... genirq: Flags mismatch irq 139. 00000000 (eth0:ch24:emac) vs. 00000000 ( ravb e6800000.ethernet eth0: cannot request IRQ eth0:ch24:emac IP-Config: Failed to open eth0 IP-Config: No network devices available The "mismatch" is due to requesting an IRQ that is already in use, while IRQF_PROBE_SHARED wasn't set. However, the real cause is that ravb_close() doesn't release any of the R-Car Gen3-specific secondary IRQs. Add the missing free_irq() calls to fix this. Fixes: 22d4df8ff3a3cc72 ("ravb: Add support for r8a7795 SoC") Fixes: f51bdc236b6c5835 ("ravb: Add dma queue interrupt support") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- This version is against net-next.git. v2: - Clearly state which version this patch is against, - Add Fixes tags. --- drivers/net/ethernet/renesas/ravb_main.c | 7 +++++++ 1 file changed, 7 insertions(+)