From mboxrd@z Thu Jan 1 00:00:00 1970 From: narmstrong@baylibre.com (Neil Armstrong) Date: Thu, 17 Dec 2015 15:00:35 +0100 Subject: [PATCH 2/3] pwm: Add PWM driver for OMAP using dual-mode timers In-Reply-To: <20151216162747.GL28947@ulmo> References: <5637458D.60106@baylibre.com> <20151216162747.GL28947@ulmo> Message-ID: <5672C003.3010105@baylibre.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Thierry, On 12/16/2015 05:27 PM, Thierry Reding wrote: > I've applied this with some coding style bikeshedding applied. Also I > think there's a timer leak in the probe function: Indeed, the coding style had some root for ameliorations ! Thanks ! I also missed this timer leak, thanks for the fix. > >> diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c > [...] >> +static int pwm_omap_dmtimer_probe(struct platform_device *pdev) >> +{ > [...] >> + dm_timer = pdata->request_by_node(timer); >> + if (!dm_timer) >> + return -EPROBE_DEFER; > > dm_timer holds the requested timer now. > >> + >> + omap = devm_kzalloc(&pdev->dev, sizeof(*omap), GFP_KERNEL); >> + if (!omap) >> + return -ENOMEM; > > But it's not released when this allocation fails... > >> + >> + omap->pdata = pdata; >> + omap->dm_timer = dm_timer; >> + omap->dm_timer_pdev = of_find_device_by_node(timer); >> + if (!omap->dm_timer_pdev) { >> + dev_err(&pdev->dev, "Unable to find timer pdev\n"); >> + return -EINVAL; >> + } > > ... nor when this lookup fails. I've taken the liberty of adding two > calls to omap->pdata->free(dm_timer) to these error paths. Perfect ! > Please take a look at what's in the pwm/for-next branch to see if it > still works correctly. I had a look against my original patch and it should be ok, I will still hook it up back on the real HW in case we forgot something. > Thanks, > Thierry > Thanks ! Neil -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: OpenPGP digital signature URL: