Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756951Ab2JQMjm (ORCPT ); Wed, 17 Oct 2012 08:39:42 -0400 Received: from mail-ie0-f174.google.com ([209.85.223.174]:62818 "EHLO mail-ie0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755778Ab2JQMjj (ORCPT ); Wed, 17 Oct 2012 08:39:39 -0400 MIME-Version: 1.0 In-Reply-To: References: Date: Wed, 17 Oct 2012 09:39:38 -0300 Message-ID: Subject: Re: [PATCH] [media] stk1160: Check return value of stk1160_read_reg() in stk1160_i2c_read_reg() From: Ezequiel Garcia To: Jesper Juhl Cc: Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3657 Lines: 98 On Tue, Oct 16, 2012 at 4:06 PM, Jesper Juhl wrote: > On Mon, 15 Oct 2012, Ezequiel Garcia wrote: > >> On Mon, Oct 15, 2012 at 9:03 PM, Jesper Juhl wrote: >> > On Mon, 15 Oct 2012, Ezequiel Garcia wrote: >> > >> >> On Mon, Oct 15, 2012 at 7:52 PM, Jesper Juhl wrote: >> >> > On Mon, 15 Oct 2012, Jesper Juhl wrote: >> >> > >> >> >> On Sat, 13 Oct 2012, Ezequiel Garcia wrote: >> >> >> >> > [...] >> >> > Currently there are two checks for 'rc' being less than zero with no >> >> > change to 'rc' between the two, so the second is just dead code. >> >> > The intention seems to have been to assign the return value of >> >> > 'stk1160_read_reg()' to 'rc' before the (currently dead) second check >> >> > and then test /that/. This patch does that. >> >> > >> >> >> >> This is an overly complicated explanation for such a small patch. >> >> Can you try to simplify it? >> >> >> > How's this? >> > >> > >> > From: Jesper Juhl >> > Date: Sat, 13 Oct 2012 00:16:37 +0200 >> > Subject: [PATCH] [media] stk1160: Check return value of stk1160_read_reg() in stk1160_i2c_read_reg() >> > >> > Remember to collect the exit status from 'stk1160_read_reg()' in 'rc' >> > before testing it for less than zero. >> > >> > Signed-off-by: Jesper Juhl >> > --- >> > drivers/media/usb/stk1160/stk1160-i2c.c | 3 +-- >> > 1 files changed, 1 insertions(+), 2 deletions(-) >> > >> > diff --git a/drivers/media/usb/stk1160/stk1160-i2c.c b/drivers/media/usb/stk1160/stk1160-i2c.c >> > index 176ac93..a2370e4 100644 >> > --- a/drivers/media/usb/stk1160/stk1160-i2c.c >> > +++ b/drivers/media/usb/stk1160/stk1160-i2c.c >> > @@ -116,10 +116,9 @@ static int stk1160_i2c_read_reg(struct stk1160 *dev, u8 addr, >> > if (rc < 0) >> > return rc; >> > >> > - stk1160_read_reg(dev, STK1160_SBUSR_RD, value); >> > + rc = stk1160_read_reg(dev, STK1160_SBUSR_RD, value); >> > if (rc < 0) >> > return rc; >> > - >> ^^^^^^^^^^^^^^^^^^^^^^^^ >> Sorry for the nitpick, but I'd like you to *not* remove this line. >> > No problem. > I hope the below is OK :-) > > > From: Jesper Juhl > Date: Sat, 13 Oct 2012 00:16:37 +0200 > Subject: [PATCH] [media] stk1160: Check return value of stk1160_read_reg() in stk1160_i2c_read_reg() > > Remember to collect the exit status from 'stk1160_read_reg()' in 'rc' > before testing it for less than zero. > > Signed-off-by: Jesper Juhl > --- > drivers/media/usb/stk1160/stk1160-i2c.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/media/usb/stk1160/stk1160-i2c.c b/drivers/media/usb/stk1160/stk1160-i2c.c > index 176ac93..850cf28 100644 > --- a/drivers/media/usb/stk1160/stk1160-i2c.c > +++ b/drivers/media/usb/stk1160/stk1160-i2c.c > @@ -116,7 +116,7 @@ static int stk1160_i2c_read_reg(struct stk1160 *dev, u8 addr, > if (rc < 0) > return rc; > > - stk1160_read_reg(dev, STK1160_SBUSR_RD, value); > + rc = stk1160_read_reg(dev, STK1160_SBUSR_RD, value); > if (rc < 0) > return rc; > > -- > 1.7.1 > > > -- > Jesper Juhl http://www.chaosbits.net/ > Don't top-post http://www.catb.org/jargon/html/T/top-post.html > Plain text mails only, please. > Acked-by: Ezequiel Garcia -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/