> -----Original Message----- > From: Paul Walmsley [mailto:paul@xxxxxxxxx] > Sent: Wednesday, January 20, 2010 6:49 AM > To: Premi, Sanjeev > Cc: linux-omap@xxxxxxxxxxxxxxx > Subject: Re: [PATCH] omap3: Check return values for clk_get > > Hello Sanjeev, > > some comments. > > > On Fri, 8 Jan 2010, Sanjeev Premi wrote: > > > This patch checks if clk_get() returned success for > > the clocks used in function omap2_clk_arch_init(). > > > > Signed-off-by: Sanjeev Premi <premi@xxxxxx> > > --- > > arch/arm/mach-omap2/clock34xx.c | 25 +++++++++++++++++++++++-- > > 1 files changed, 23 insertions(+), 2 deletions(-) > > > > diff --git a/arch/arm/mach-omap2/clock34xx.c > b/arch/arm/mach-omap2/clock34xx.c > > index d4217b9..2c2165b 100644 > > --- a/arch/arm/mach-omap2/clock34xx.c > > +++ b/arch/arm/mach-omap2/clock34xx.c > > @@ -316,17 +316,38 @@ static int __init omap2_clk_arch_init(void) > > { > > struct clk *osc_sys_ck, *dpll1_ck, *arm_fck, *core_ck; > > unsigned long osc_sys_rate; > > + short err = 0 ; > > Why a 'short' here? Seems like it makes more sense as a bool. > > > > > if (!mpurate) > > return -EINVAL; > > > > - /* XXX test these for success */ > > dpll1_ck = clk_get(NULL, "dpll1_ck"); > > + if (dpll1_ck == NULL) { > > + err = 1; > > + pr_err("*** Failed to get dpll1_ck.\n"); > > + } > > + > > arm_fck = clk_get(NULL, "arm_fck"); > > + if (arm_fck == NULL) { > > + err = 1; > > + pr_err("*** Failed to get arm_fck.\n"); > > + } > > + > > core_ck = clk_get(NULL, "core_ck"); > > + if (core_ck == NULL) { > > + err = 1; > > + pr_err("*** Failed to get core_ck.\n"); > > + } > > + > > osc_sys_ck = clk_get(NULL, "osc_sys_ck"); > > + if (osc_sys_ck == NULL) { > > + err = 1; > > + pr_err("*** Failed to get osc_sys_ck.\n"); > > + } > > + > > + if (err) > > + return 1; > > This is not a good error value. This function should return > either 0 for > success or a negative error number on failure. Maybe ENOENT? > Thanks for comments Paul. After Kevin's comments, I had reworked this patch and I believe all your comments are getting addressed there I am stuck in some 3630/3730 boot issues; will be sending the updated patch soon. Best regards, Sanjeev > > > > - /* REVISIT: not yet ready for 343x */ > > if (clk_set_rate(dpll1_ck, mpurate)) > > printk(KERN_ERR "*** Unable to set MPU rate\n"); > > > > -- > > 1.6.2.2 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe > linux-omap" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > - Paul > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
