From mboxrd@z Thu Jan 1 00:00:00 1970 From: tony@atomide.com (Tony Lindgren) Date: Tue, 6 Mar 2012 18:28:09 -0800 Subject: [PATCH] ARM: OMAP2+: gpmc-smsc911x: only register regulator for first instance In-Reply-To: <87sjhlnq96.fsf@ti.com> References: <1331080771-30687-1-git-send-email-khilman@ti.com> <20120307004405.GC12083@atomide.com> <87sjhlnq96.fsf@ti.com> Message-ID: <20120307022809.GD12083@atomide.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org * Kevin Hilman [120306 17:07]: > Tony Lindgren writes: > > > * Kevin Hilman [120306 16:07]: > >> commit e4b0b2cbbb (ARM: OMAP2+: gpmc-smsc911x: add required smsc911x > >> regulators) added regulators which are registered during > >> gpmc_smsc911x_init(). However, some platforms (OMAP3/Overo) have more > >> than one instance of the SMSC911x and result in attempting to register > >> the same regulator more than once which causes a panic(). > >> > >> Fix this by only registering the regulator when the platform_data id > >> field is zero, indicating its the first instance. > >> > >> Cc: Matt Porter > >> Signed-off-by: Kevin Hilman > >> --- > >> Fix needed for v3.3. > >> Applies on top of Tony's fixes branch. > >> > >> arch/arm/mach-omap2/gpmc-smsc911x.c | 11 +++++++---- > >> 1 file changed, 7 insertions(+), 4 deletions(-) > >> > >> diff --git a/arch/arm/mach-omap2/gpmc-smsc911x.c b/arch/arm/mach-omap2/gpmc-smsc911x.c > >> index bbb870c..4d6f1c6 100644 > >> --- a/arch/arm/mach-omap2/gpmc-smsc911x.c > >> +++ b/arch/arm/mach-omap2/gpmc-smsc911x.c > >> @@ -101,10 +101,13 @@ void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data) > >> > >> gpmc_cfg = board_data; > >> > >> - ret = platform_device_register(&gpmc_smsc911x_regulator); > >> - if (ret < 0) { > >> - pr_err("Unable to register smsc911x regulators: %d\n", ret); > >> - return; > >> + if (!gpmc_cfg) { > > > > Shouldn't this be !gpmc_cfg->id instead.. > > doh, of course. Updated patch below. Thanks, applying into fixes. Regards, Tony