From: Hans de Goede hdegoede@redhat.com
commit 812c2d7506fde7cdf83cb2532810a65782b51741 upstream.
Use named struct initializers for the freq_desc struct-s initialization and change the "u8 msr_plat" to a "bool use_msr_plat" to make its meaning more clear instead of relying on a comment to explain it.
Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20200223140610.59612-1-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/kernel/tsc_msr.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-)
--- a/arch/x86/kernel/tsc_msr.c +++ b/arch/x86/kernel/tsc_msr.c @@ -22,10 +22,10 @@ * read in MSR_PLATFORM_ID[12:8], otherwise in MSR_PERF_STAT[44:40]. * Unfortunately some Intel Atom SoCs aren't quite compliant to this, * so we need manually differentiate SoC families. This is what the - * field msr_plat does. + * field use_msr_plat does. */ struct freq_desc { - u8 msr_plat; /* 1: use MSR_PLATFORM_INFO, 0: MSR_IA32_PERF_STATUS */ + bool use_msr_plat; u32 freqs[MAX_NUM_FREQS]; };
@@ -35,31 +35,39 @@ struct freq_desc { * by MSR based on SDM. */ static const struct freq_desc freq_desc_pnw = { - 0, { 0, 0, 0, 0, 0, 99840, 0, 83200 } + .use_msr_plat = false, + .freqs = { 0, 0, 0, 0, 0, 99840, 0, 83200 }, };
static const struct freq_desc freq_desc_clv = { - 0, { 0, 133200, 0, 0, 0, 99840, 0, 83200 } + .use_msr_plat = false, + .freqs = { 0, 133200, 0, 0, 0, 99840, 0, 83200 }, };
static const struct freq_desc freq_desc_byt = { - 1, { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 } + .use_msr_plat = true, + .freqs = { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 }, };
static const struct freq_desc freq_desc_cht = { - 1, { 83300, 100000, 133300, 116700, 80000, 93300, 90000, 88900, 87500 } + .use_msr_plat = true, + .freqs = { 83300, 100000, 133300, 116700, 80000, 93300, 90000, + 88900, 87500 }, };
static const struct freq_desc freq_desc_tng = { - 1, { 0, 100000, 133300, 0, 0, 0, 0, 0 } + .use_msr_plat = true, + .freqs = { 0, 100000, 133300, 0, 0, 0, 0, 0 }, };
static const struct freq_desc freq_desc_ann = { - 1, { 83300, 100000, 133300, 100000, 0, 0, 0, 0 } + .use_msr_plat = true, + .freqs = { 83300, 100000, 133300, 100000, 0, 0, 0, 0 }, };
static const struct freq_desc freq_desc_lgm = { - 1, { 78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000 } + .use_msr_plat = true, + .freqs = { 78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000 }, };
static const struct x86_cpu_id tsc_msr_cpu_ids[] = { @@ -91,7 +99,7 @@ unsigned long cpu_khz_from_msr(void) return 0;
freq_desc = (struct freq_desc *)id->driver_data; - if (freq_desc->msr_plat) { + if (freq_desc->use_msr_plat) { rdmsr(MSR_PLATFORM_INFO, lo, hi); ratio = (lo >> 8) & 0xff; } else {