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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2023-10-30 11:12:26 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-25 14:52:36 -0800 |
| commit | 41b3228281c3f6be5b56196073107a23a4f03ea8 (patch) | |
| tree | b0639f70cd8929294577af416ed66c29ea730a62 /drivers/firmware | |
| parent | 7e36646237c711dff4eefe4cd46e1e5cca10e56b (diff) | |
| download | linux-41b3228281c3f6be5b56196073107a23a4f03ea8.tar.gz linux-41b3228281c3f6be5b56196073107a23a4f03ea8.tar.bz2 linux-41b3228281c3f6be5b56196073107a23a4f03ea8.zip | |
firmware: ti_sci: Fix an off-by-one in ti_sci_debugfs_create()
[ Upstream commit 964946b88887089f447a9b6a28c39ee97dc76360 ]
The ending NULL is not taken into account by strncat(), so switch to
snprintf() to correctly build 'debug_name'.
Using snprintf() also makes the code more readable.
Fixes: aa276781a64a ("firmware: Add basic support for TI System Control Interface (TI-SCI) protocol")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/7158db0a4d7b19855ddd542ec61b666973aad8dc.1698660720.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/ti_sci.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index c2fafe49c2e8..b313337e4f19 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -161,7 +161,7 @@ static int ti_sci_debugfs_create(struct platform_device *pdev, { struct device *dev = &pdev->dev; struct resource *res; - char debug_name[50] = "ti_sci_debug@"; + char debug_name[50]; /* Debug region is optional */ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -178,10 +178,10 @@ static int ti_sci_debugfs_create(struct platform_device *pdev, /* Setup NULL termination */ info->debug_buffer[info->debug_region_size] = 0; - info->d = debugfs_create_file(strncat(debug_name, dev_name(dev), - sizeof(debug_name) - - sizeof("ti_sci_debug@")), - 0444, NULL, info, &ti_sci_debug_fops); + snprintf(debug_name, sizeof(debug_name), "ti_sci_debug@%s", + dev_name(dev)); + info->d = debugfs_create_file(debug_name, 0444, NULL, info, + &ti_sci_debug_fops); if (IS_ERR(info->d)) return PTR_ERR(info->d); |