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Date: Sun, 17 Feb 2013 15:49:28 +0100 From: walter harms <wharms@....de> To: Kumar Amit Mehta <gmate.amit@...il.com> CC: jdmason@...zu.us, davem@...emloft.net, joe@...ches.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: Re: [PATCH] ethernet: neterion: vxge: vxge-traffic.c: fix for a potential NULL pointer dereference Am 16.02.2013 18:56, schrieb Kumar Amit Mehta: > fix for a potential NULL pointer dereference and removal of a redundant > assignment operation. Found using smatch. > > Signed-off-by: Kumar Amit Mehta <gmate.amit@...il.com> > --- > drivers/net/ethernet/neterion/vxge/vxge-traffic.c | 8 ++------ > 1 file changed, 2 insertions(+), 6 deletions(-) > > diff --git a/drivers/net/ethernet/neterion/vxge/vxge-traffic.c b/drivers/net/ethernet/neterion/vxge/vxge-traffic.c > index 99749bd..adb05a8 100644 > --- a/drivers/net/ethernet/neterion/vxge/vxge-traffic.c > +++ b/drivers/net/ethernet/neterion/vxge/vxge-traffic.c > @@ -611,11 +611,8 @@ __vxge_hw_vpath_alarm_process(struct __vxge_hw_virtualpath *vpath, > struct vxge_hw_vpath_stats_sw_info *sw_stats; > struct vxge_hw_vpath_reg __iomem *vp_reg; > > - if (vpath == NULL) { > - alarm_event = VXGE_HW_SET_LEVEL(VXGE_HW_EVENT_UNKNOWN, > - alarm_event); > + if (vpath == NULL) > goto out2; > - } > > hldev = vpath->hldev; > vp_reg = vpath->vp_reg; > @@ -852,13 +849,12 @@ __vxge_hw_vpath_alarm_process(struct __vxge_hw_virtualpath *vpath, > } > out: > hldev->stats.sw_dev_err_stats.vpath_alarms++; > + __vxge_hw_device_handle_error(hldev, vpath->vp_id, alarm_event); > out2: > if ((alarm_event == VXGE_HW_EVENT_ALARM_CLEARED) || > (alarm_event == VXGE_HW_EVENT_UNKNOWN)) > return VXGE_HW_OK; > > - __vxge_hw_device_handle_error(hldev, vpath->vp_id, alarm_event); > - > if (alarm_event == VXGE_HW_EVENT_SERR) > return VXGE_HW_ERR_CRITICAL; > the patch looks ok. it would be nice if someone would rewrite the if (alarm_event == x ) stuff using switch or more if()'s it is hardly readable this way. just my 2 cents, re, wh -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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