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55 lines
1.5 KiB
55 lines
1.5 KiB
6 years ago
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From 2b5c925d19e1eeecf6a24809396fed2774ee0695 Mon Sep 17 00:00:00 2001
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From: Jean Delvare <jdelvare@suse.de>
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Date: Tue, 25 Jul 2017 11:21:30 +0200
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Subject: [PATCH 06/10] biosdecode: Avoid repeating pointer arithmetic
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This makes the code both more efficient and more readable.
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---
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biosdecode.c | 18 +++++++++---------
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1 file changed, 9 insertions(+), 9 deletions(-)
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diff --git a/biosdecode.c b/biosdecode.c
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index b37e510..99a27fe 100644
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--- a/biosdecode.c
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+++ b/biosdecode.c
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@@ -375,7 +375,7 @@ static void pir_link_bitmap(char letter, const u8 *p)
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static int pir_decode(const u8 *p, size_t len)
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{
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- int i;
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+ int i, n;
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if (len < 32 || !checksum(p, WORD(p + 6)))
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return 0;
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@@ -394,18 +394,18 @@ static int pir_decode(const u8 *p, size_t len)
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printf("\tMiniport Data: 0x%08X\n",
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DWORD(p + 16));
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- for (i = 1; i <= (WORD(p + 6) - 32) / 16; i++)
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+ n = (len - 32) / 16;
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+ for (i = 1, p += 32; i <= n; i++, p += 16)
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{
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- printf("\tDevice: %02x:%02x,",
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- p[(i + 1) * 16], p[(i + 1) * 16 + 1] >> 3);
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- pir_slot_number(p[(i + 1) * 16 + 14]);
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+ printf("\tDevice: %02x:%02x,", p[0], p[1] >> 3);
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+ pir_slot_number(p[14]);
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printf("\n");
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if (opt.pir == PIR_FULL)
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{
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- pir_link_bitmap('A', p + (i + 1) * 16 + 2);
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- pir_link_bitmap('B', p + (i + 1) * 16 + 5);
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- pir_link_bitmap('C', p + (i + 1) * 16 + 8);
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- pir_link_bitmap('D', p + (i + 1) * 16 + 11);
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+ pir_link_bitmap('A', p + 2);
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+ pir_link_bitmap('B', p + 5);
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+ pir_link_bitmap('C', p + 8);
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+ pir_link_bitmap('D', p + 11);
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}
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}
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--
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2.9.5
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