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39 lines
1.5 KiB
Diff
39 lines
1.5 KiB
Diff
From cb18e2e9ec71d42409a51b83546686c609780dde Mon Sep 17 00:00:00 2001
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From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
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Date: Wed, 22 Aug 2018 15:22:15 +0200
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Subject: [PATCH] brcmfmac: fix wrong strnchr usage
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strnchr takes arguments in the order of its name: string, max bytes to
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read, character to search for. Here we're passing '\n' aka 10 as the
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buffer size, and searching for sizeof(buf) aka BRCMF_DCMD_SMLEN aka
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256 (aka '\0', since it's implicitly converted to char) within those 10
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bytes.
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Just interchanging the last two arguments would still leave a bug,
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because if we've been successful once, there are not sizeof(buf)
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characters left after the new value of p.
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Since clmver is immediately afterwards passed as a %s argument, I assume
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that it is actually a properly nul-terminated string. For that case, we
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have strreplace().
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Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
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@@ -296,9 +296,7 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
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/* Replace all newline/linefeed characters with space
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* character
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*/
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- ptr = clmver;
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- while ((ptr = strnchr(ptr, '\n', sizeof(buf))) != NULL)
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- *ptr = ' ';
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+ strreplace(clmver, '\n', ' ');
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brcmf_dbg(INFO, "CLM version = %s\n", clmver);
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}
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