From: Dan Carpenter Date: Fri, 1 Aug 2014 08:27:15 +0000 (+0300) Subject: x86/pmc_atom: Silence shift wrapping warnings in pmc_sleep_tmr_show() X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=4c51cb005b29e6329d7e598bf835689b230817c9;p=openwrt%2Fstaging%2Fblogic.git x86/pmc_atom: Silence shift wrapping warnings in pmc_sleep_tmr_show() I don't know if we really need 64 bits here but these variables are declared as u64 and it can't hurt to cast this so we prevent any shift wrapping. Signed-off-by: Dan Carpenter Acked-by: Aubrey Li Link: http://lkml.kernel.org/r/20140801082715.GE28869@mwanda Signed-off-by: H. Peter Anvin --- diff --git a/arch/x86/kernel/pmc_atom.c b/arch/x86/kernel/pmc_atom.c index 0d92ef6b5860..0c424a67985d 100644 --- a/arch/x86/kernel/pmc_atom.c +++ b/arch/x86/kernel/pmc_atom.c @@ -174,11 +174,11 @@ static int pmc_sleep_tmr_show(struct seq_file *s, void *unused) struct pmc_dev *pmc = s->private; u64 s0ir_tmr, s0i1_tmr, s0i2_tmr, s0i3_tmr, s0_tmr; - s0ir_tmr = pmc_reg_read(pmc, PMC_S0IR_TMR) << PMC_TMR_SHIFT; - s0i1_tmr = pmc_reg_read(pmc, PMC_S0I1_TMR) << PMC_TMR_SHIFT; - s0i2_tmr = pmc_reg_read(pmc, PMC_S0I2_TMR) << PMC_TMR_SHIFT; - s0i3_tmr = pmc_reg_read(pmc, PMC_S0I3_TMR) << PMC_TMR_SHIFT; - s0_tmr = pmc_reg_read(pmc, PMC_S0_TMR) << PMC_TMR_SHIFT; + s0ir_tmr = (u64)pmc_reg_read(pmc, PMC_S0IR_TMR) << PMC_TMR_SHIFT; + s0i1_tmr = (u64)pmc_reg_read(pmc, PMC_S0I1_TMR) << PMC_TMR_SHIFT; + s0i2_tmr = (u64)pmc_reg_read(pmc, PMC_S0I2_TMR) << PMC_TMR_SHIFT; + s0i3_tmr = (u64)pmc_reg_read(pmc, PMC_S0I3_TMR) << PMC_TMR_SHIFT; + s0_tmr = (u64)pmc_reg_read(pmc, PMC_S0_TMR) << PMC_TMR_SHIFT; seq_printf(s, "S0IR Residency:\t%lldus\n", s0ir_tmr); seq_printf(s, "S0I1 Residency:\t%lldus\n", s0i1_tmr);