From a5de5e242b80c085913041e99ab245408083f273 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 9 Feb 2015 17:49:43 +0100 Subject: [PATCH] x86/microcode/intel: Make _save_mc() return the updated saved count ... of microcode patches instead of handing in a pointer which is used for I/O in an otherwise void function. Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/microcode/intel_early.c | 29 ++++++++++++++--------------- 1 file changed, 14 insertions(+), 15 deletions(-) diff --git a/arch/x86/kernel/cpu/microcode/intel_early.c b/arch/x86/kernel/cpu/microcode/intel_early.c index 34a2ff9..f1d9a32 100644 --- a/arch/x86/kernel/cpu/microcode/intel_early.c +++ b/arch/x86/kernel/cpu/microcode/intel_early.c @@ -262,17 +262,18 @@ err: * - or if it is a newly discovered microcode patch. * * The microcode patch should have matching model with CPU. + * + * Returns: The updated number @num_saved of saved microcode patches. */ -static void _save_mc(struct microcode_intel **mc_saved, u8 *ucode_ptr, - unsigned int *mc_saved_count_p) +static unsigned int _save_mc(struct microcode_intel **mc_saved, + u8 *ucode_ptr, unsigned int num_saved) { - int i; - int found = 0; - unsigned int mc_saved_count = *mc_saved_count_p; struct microcode_header_intel *mc_header; + int found = 0, i; mc_header = (struct microcode_header_intel *)ucode_ptr; - for (i = 0; i < mc_saved_count; i++) { + + for (i = 0; i < num_saved; i++) { unsigned int sig, pf; unsigned int new_rev; struct microcode_header_intel *mc_saved_header = @@ -289,21 +290,20 @@ static void _save_mc(struct microcode_intel **mc_saved, u8 *ucode_ptr, * Replace the older one with this newer * one. */ - mc_saved[i] = - (struct microcode_intel *)ucode_ptr; + mc_saved[i] = (struct microcode_intel *)ucode_ptr; break; } } } - if (i >= mc_saved_count && !found) + + if (i >= num_saved && !found) /* * This ucode is first time discovered in ucode file. * Save it to memory. */ - mc_saved[mc_saved_count++] = - (struct microcode_intel *)ucode_ptr; + mc_saved[num_saved++] = (struct microcode_intel *)ucode_ptr; - *mc_saved_count_p = mc_saved_count; + return num_saved; } /* @@ -351,7 +351,7 @@ get_matching_model_microcode(int cpu, unsigned long start, continue; } - _save_mc(mc_saved_tmp, ucode_ptr, &mc_saved_count); + mc_saved_count = _save_mc(mc_saved_tmp, ucode_ptr, mc_saved_count); ucode_ptr += mc_size; } @@ -519,8 +519,7 @@ int save_mc_for_early(u8 *mc) * Save the microcode patch mc in mc_save_tmp structure if it's a newer * version. */ - - _save_mc(mc_saved_tmp, mc, &mc_saved_count); + mc_saved_count = _save_mc(mc_saved_tmp, mc, mc_saved_count); /* * Save the mc_save_tmp in global mc_saved_data. -- 2.7.4