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Date: Tue, 27 Dec 2011 17:25:38 +0800 From: Eric Miao <eric.y.miao@...il.com> To: Haojian Zhuang <hzhuang1@...vell.com> Cc: Axel Lin <axel.lin@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Russell King <linux@....linux.org.uk>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-pcmcia@...ts.infradead.org" <linux-pcmcia@...ts.infradead.org> Subject: Re: [PATCH RESEND] ARM: pxa: fix error handling in pxa2xx_drv_pcmcia_probe On Tue, Dec 27, 2011 at 5:18 PM, Haojian Zhuang <hzhuang1@...vell.com> wrote: > > ________________________________________ > From: Eric Miao [eric.y.miao@...il.com] > Sent: Tuesday, December 27, 2011 5:11 PM > To: Axel Lin > Cc: linux-kernel@...r.kernel.org; Haojian Zhuang; Russell King; linux-arm-kernel@...ts.infradead.org; linux-pcmcia@...ts.infradead.org > Subject: Re: [PATCH RESEND] ARM: pxa: fix error handling in pxa2xx_drv_pcmcia_probe > > On Tue, Dec 27, 2011 at 4:25 PM, Axel Lin <axel.lin@...il.com> wrote: >> If pxa2xx_drv_pcmcia_add_one fails, it will go to err1 error path. >> Add a missing clk_put in the error path. >> >> Checking the ret value after the for loop is redundant, it is always false. >> Thus remove the redundant checking. >> >> Signed-off-by: Axel Lin <axel.lin@...il.com> > > Acked-by: Eric Miao <eric.y.miao@...il.com> > >> --- >> drivers/pcmcia/pxa2xx_base.c | 12 +++--------- >> 1 files changed, 3 insertions(+), 9 deletions(-) >> >> diff --git a/drivers/pcmcia/pxa2xx_base.c b/drivers/pcmcia/pxa2xx_base.c >> index a87e272..64d433e 100644 >> --- a/drivers/pcmcia/pxa2xx_base.c >> +++ b/drivers/pcmcia/pxa2xx_base.c >> @@ -328,21 +328,15 @@ static int pxa2xx_drv_pcmcia_probe(struct platform_device *dev) >> goto err1; >> } >> >> - if (ret) { >> - while (--i >= 0) >> - soc_pcmcia_remove_one(&sinfo->skt[i]); >> - kfree(sinfo); >> - clk_put(clk); >> - } else { >> - pxa2xx_configure_sockets(&dev->dev); >> - dev_set_drvdata(&dev->dev, sinfo); >> - } >> + pxa2xx_configure_sockets(&dev->dev); >> + dev_set_drvdata(&dev->dev, sinfo); >> >> return 0; >> >> err1: >> while (--i >= 0) >> soc_pcmcia_remove_one(&sinfo->skt[i]); >> + clk_put(clk); >> kfree(sinfo); >> err0: >> return ret; >> -- >> 1.7.5.4 >> >> >> > Wait a minute. > > The original code will check whether pxa2xx_drv_pcmcia_add_one() successful. If it fails, we'll remove all devices that we registered. > > But Axel removed these code. Why? If it fails, it will jump to err1 anyway. The check there is redundant. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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