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[34.91.79.216]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8e9fcd8be3sm117979666b.10.2026.02.04.04.06.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Feb 2026 04:06:03 -0800 (PST) From: Artem Lytkin To: Sudip Mukherjee , Teddy Wang , Greg Kroah-Hartman Cc: linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Artem Lytkin Subject: [PATCH v3 2/5] staging: sm750fb: use strcmp() for exact option matching Date: Wed, 4 Feb 2026 12:05:59 +0000 Message-ID: <20260204120602.6715-2-iprintercanon@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260204120602.6715-1-iprintercanon@gmail.com> References: <20260204120602.6715-1-iprintercanon@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Replace strncmp(opt, "...", strlen("...")) with strcmp() in option parsing functions. Options from strsep() are complete null-terminated tokens, so prefix matching via strncmp() could cause false positives for options like "noaccelXYZ" matching "noaccel". Fixes: 81dee67e215b ("staging: sm750fb: add sm750 to staging") Signed-off-by: Artem Lytkin --- drivers/staging/sm750fb/sm750.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c index 4c6e84c03..bd2d4a290 100644 --- a/drivers/staging/sm750fb/sm750.c +++ b/drivers/staging/sm750fb/sm750.c @@ -937,21 +937,21 @@ static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src) dev_info(&sm750_dev->pdev->dev, "opt=%s\n", opt); dev_info(&sm750_dev->pdev->dev, "src=%s\n", src); - if (!strncmp(opt, "swap", strlen("swap"))) { + if (!strcmp(opt, "swap")) { swap = 1; - } else if (!strncmp(opt, "nocrt", strlen("nocrt"))) { + } else if (!strcmp(opt, "nocrt")) { sm750_dev->nocrt = 1; - } else if (!strncmp(opt, "36bit", strlen("36bit"))) { + } else if (!strcmp(opt, "36bit")) { sm750_dev->pnltype = sm750_doubleTFT; - } else if (!strncmp(opt, "18bit", strlen("18bit"))) { + } else if (!strcmp(opt, "18bit")) { sm750_dev->pnltype = sm750_dualTFT; - } else if (!strncmp(opt, "24bit", strlen("24bit"))) { + } else if (!strcmp(opt, "24bit")) { sm750_dev->pnltype = sm750_24TFT; - } else if (!strncmp(opt, "nohwc0", strlen("nohwc0"))) { + } else if (!strcmp(opt, "nohwc0")) { g_hwcursor &= ~0x1; - } else if (!strncmp(opt, "nohwc1", strlen("nohwc1"))) { + } else if (!strcmp(opt, "nohwc1")) { g_hwcursor &= ~0x2; - } else if (!strncmp(opt, "nohwc", strlen("nohwc"))) { + } else if (!strcmp(opt, "nohwc")) { g_hwcursor = 0; } else { if (!g_fbmode[0]) { @@ -1156,11 +1156,11 @@ static int __init lynxfb_setup(char *options) */ while ((opt = strsep(&options, ":")) != NULL) { /* options that mean for any lynx chips are configured here */ - if (!strncmp(opt, "noaccel", strlen("noaccel"))) { + if (!strcmp(opt, "noaccel")) { g_noaccel = 1; - } else if (!strncmp(opt, "nomtrr", strlen("nomtrr"))) { + } else if (!strcmp(opt, "nomtrr")) { g_nomtrr = 1; - } else if (!strncmp(opt, "dual", strlen("dual"))) { + } else if (!strcmp(opt, "dual")) { g_dualview = 1; } else { memcpy(tmp, opt, strlen(opt)); -- 2.43.0