From: Julia Lawall <Julia.Lawall@lip6.fr> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: kernel-janitors@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] drivers/usb/wusbcore/wa-hc.c: fix error return code Date: Tue, 14 Aug 2012 08:47:36 +0200 [thread overview] Message-ID: <1344926858-1162-4-git-send-email-Julia.Lawall@lip6.fr> (raw) In-Reply-To: <1344926858-1162-1-git-send-email-Julia.Lawall@lip6.fr> From: Julia Lawall <Julia.Lawall@lip6.fr> Convert a 0 error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e,e1,e2,e3,e4,x; @@ ( if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } | ret = 0 ) ... when != ret = e1 *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); ... when != x = e2 when != ret = e3 *if (x == NULL || ...) { ... when != ret = e4 * return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> --- drivers/usb/wusbcore/wa-hc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/wusbcore/wa-hc.c b/drivers/usb/wusbcore/wa-hc.c index 9e4a924..a09b65e 100644 --- a/drivers/usb/wusbcore/wa-hc.c +++ b/drivers/usb/wusbcore/wa-hc.c @@ -46,8 +46,10 @@ int wa_create(struct wahc *wa, struct usb_interface *iface) wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc; wa->xfer_result_size = usb_endpoint_maxp(wa->dti_epd); wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL); - if (wa->xfer_result == NULL) + if (wa->xfer_result == NULL) { + result = -ENOMEM; goto error_xfer_result_alloc; + } result = wa_nep_create(wa, iface); if (result < 0) { dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
WARNING: multiple messages have this Message-ID (diff)
From: Julia Lawall <Julia.Lawall@lip6.fr> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: kernel-janitors@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] drivers/usb/wusbcore/wa-hc.c: fix error return code Date: Tue, 14 Aug 2012 06:47:36 +0000 [thread overview] Message-ID: <1344926858-1162-4-git-send-email-Julia.Lawall@lip6.fr> (raw) In-Reply-To: <1344926858-1162-1-git-send-email-Julia.Lawall@lip6.fr> From: Julia Lawall <Julia.Lawall@lip6.fr> Convert a 0 error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e,e1,e2,e3,e4,x; @@ ( if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } | ret = 0 ) ... when != ret = e1 *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); ... when != x = e2 when != ret = e3 *if (x = NULL || ...) { ... when != ret = e4 * return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> --- drivers/usb/wusbcore/wa-hc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/wusbcore/wa-hc.c b/drivers/usb/wusbcore/wa-hc.c index 9e4a924..a09b65e 100644 --- a/drivers/usb/wusbcore/wa-hc.c +++ b/drivers/usb/wusbcore/wa-hc.c @@ -46,8 +46,10 @@ int wa_create(struct wahc *wa, struct usb_interface *iface) wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc; wa->xfer_result_size = usb_endpoint_maxp(wa->dti_epd); wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL); - if (wa->xfer_result = NULL) + if (wa->xfer_result = NULL) { + result = -ENOMEM; goto error_xfer_result_alloc; + } result = wa_nep_create(wa, iface); if (result < 0) { dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
next prev parent reply other threads:[~2012-08-14 6:47 UTC|newest] Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-08-14 6:47 [PATCH 0/5] fix error return code Julia Lawall 2012-08-14 6:47 ` Julia Lawall 2012-08-14 6:47 ` [PATCH 1/5] drivers/usb/gadget/s3c-hsotg.c: " Julia Lawall 2012-08-14 6:47 ` Julia Lawall 2012-08-14 6:47 ` [PATCH 2/5] drivers/tty/moxa.c: " Julia Lawall 2012-08-14 6:47 ` Julia Lawall 2012-08-14 6:47 ` Julia Lawall [this message] 2012-08-14 6:47 ` [PATCH 3/5] drivers/usb/wusbcore/wa-hc.c: " Julia Lawall 2012-08-14 6:47 ` [PATCH 4/5] drivers/usb/host/ohci-platform.c: " Julia Lawall 2012-08-14 6:47 ` Julia Lawall 2012-08-15 14:37 ` Alan Stern 2012-08-15 14:37 ` Alan Stern 2012-08-14 6:47 ` [PATCH 5/5] drivers/usb/host/ehci-platform.c: " Julia Lawall 2012-08-14 6:47 ` Julia Lawall 2012-08-15 14:37 ` Alan Stern 2012-08-15 14:37 ` Alan Stern 2012-08-14 12:58 [PATCH 0/5] " Julia Lawall 2012-08-14 12:58 ` Julia Lawall 2012-08-14 12:58 ` [PATCH 1/5] drivers/cdrom/gdrom.c: " Julia Lawall 2012-08-14 12:58 ` Julia Lawall 2012-08-14 12:58 ` [PATCH 2/5] drivers/dma/amba-pl08x.c: " Julia Lawall 2012-08-14 12:58 ` Julia Lawall 2012-08-22 4:29 ` Vinod Koul 2012-08-22 4:41 ` Vinod Koul 2012-08-14 12:58 ` [PATCH 3/5] drivers/net/ethernet/freescale/fs_enet: " Julia Lawall 2012-08-14 12:58 ` Julia Lawall 2012-08-14 12:58 ` Julia Lawall 2012-08-15 0:01 ` David Miller 2012-08-15 0:01 ` David Miller 2012-08-15 0:01 ` David Miller 2012-08-14 12:58 ` [PATCH 4/5] drivers/net/ethernet/mellanox/mlx4/mcg.c: " Julia Lawall 2012-08-14 12:58 ` Julia Lawall 2012-08-15 0:01 ` David Miller 2012-08-15 0:01 ` David Miller 2012-08-14 12:58 ` [PATCH 5/5] drivers/infiniband/hw/qib/qib_iba7322.c: " Julia Lawall 2012-08-14 12:58 ` Julia Lawall [not found] ` <1344949115-13266-6-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org> 2012-08-14 13:14 ` Marciniszyn, Mike 2012-08-14 13:14 ` Marciniszyn, Mike 2012-08-14 13:14 ` Marciniszyn, Mike 2014-08-07 12:49 [PATCH 0/5] " Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 12:49 ` [PATCH 1/5] avr32: " Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 13:00 ` Hans-Christian Egtvedt 2014-08-07 13:00 ` Hans-Christian Egtvedt 2014-08-07 12:49 ` [PATCH 3/5] drivers/atm/atmtcp.c: " Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 13:10 ` chas williams - CONTRACTOR 2014-08-07 13:10 ` chas williams - CONTRACTOR 2014-08-07 13:25 ` Julia Lawall 2014-08-07 13:25 ` Julia Lawall 2014-08-07 13:31 ` Julia Lawall 2014-08-07 13:31 ` Julia Lawall 2014-08-07 13:41 ` chas williams - CONTRACTOR 2014-08-07 13:41 ` chas williams - CONTRACTOR 2014-08-07 23:05 ` David Miller 2014-08-07 23:05 ` David Miller 2014-08-07 12:49 ` [PATCH 2/5] solos-pci: " Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 13:14 ` chas williams - CONTRACTOR 2014-08-07 13:14 ` chas williams - CONTRACTOR 2014-08-07 23:04 ` David Miller 2014-08-07 23:04 ` David Miller 2014-08-07 12:49 ` [PATCH 4/5] netfilter: nf_tables: " Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-11 16:41 ` Pablo Neira Ayuso 2014-08-11 16:41 ` Pablo Neira Ayuso 2014-08-07 12:49 ` [PATCH 5/5] kexec: " Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-08-07 12:49 ` Julia Lawall 2014-11-23 13:11 [PATCH 0/5] " Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` [PATCH 1/5] mptfusion: " Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` [PATCH 2/5] drm/exynos/ipp: " Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` [PATCH 3/5] electra_cf: " Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-23 13:11 ` [PATCH 4/5] drm/rcar-du: " Julia Lawall 2014-11-23 13:11 ` Julia Lawall 2014-11-26 22:01 ` Laurent Pinchart 2014-11-26 22:01 ` Laurent Pinchart 2014-11-23 13:11 ` [PATCH 5/5] drivers/gpu/drm: " Julia Lawall 2014-11-23 13:11 ` Julia Lawall
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