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Date: Wed, 1 Nov 2017 16:39:54 +0100 From: SF Markus Elfring <elfring@...rs.sourceforge.net> To: kbuild test robot <lkp@...el.com>, dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>, David Airlie <airlied@...ux.ie>, Jani Nikula <jani.nikula@...ux.intel.com>, Laurent Pinchart <laurent.pinchart@...asonboard.com> Cc: kernel-janitors@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, kbuild-all@...org, Geert Uytterhoeven <geert@...ux-m68k.org> Subject: [PATCH v2 1/2] drm/rcar-du: Use common error handling code in rcar_du_encoders_init() From: Markus Elfring <elfring@...rs.sourceforge.net> Date: Wed, 1 Nov 2017 15:57:31 +0100 * Add a jump target so that a bit of exception handling can be better reused at the end of this function. * Increase the scope for the variable "ret". This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net> --- v2: The declaration for the variable "ret" was moved out of a loop. drivers/gpu/drm/rcar-du/rcar_du_kms.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 566d1a948c8f..b6b341164aab 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -365,6 +365,7 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu) struct device_node *np = rcdu->dev->of_node; struct device_node *ep_node; unsigned int num_encoders = 0; + int ret; /* * Iterate over the endpoints and create one encoder for each output @@ -374,13 +375,10 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu) enum rcar_du_output output; struct of_endpoint ep; unsigned int i; - int ret; ret = of_graph_parse_endpoint(ep_node, &ep); - if (ret < 0) { - of_node_put(ep_node); - return ret; - } + if (ret < 0) + goto put_node; /* Find the output route corresponding to the port number. */ for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) { @@ -401,10 +399,8 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu) /* Process the output pipeline. */ ret = rcar_du_encoders_init_one(rcdu, output, &ep); if (ret < 0) { - if (ret == -EPROBE_DEFER) { - of_node_put(ep_node); - return ret; - } + if (ret == -EPROBE_DEFER) + goto put_node; continue; } @@ -413,6 +409,10 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu) } return num_encoders; + +put_node: + of_node_put(ep_node); + return ret; } static int rcar_du_properties_init(struct rcar_du_device *rcdu) -- 2.14.3
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