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firmware: ti_sci: fix strncat length check

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gcc-7 notices that the length we pass to strncat is wrong:

drivers/firmware/ti_sci.c: In function 'ti_sci_probe':
drivers/firmware/ti_sci.c:204:32: error: specified bound 50 equals the size of the destination [-Werror=stringop-overflow=]

Instead of the total length, we must pass the length of the
remaining space here.

Fixes: aa276781a6 ("firmware: Add basic support for TI System Control Interface (TI-SCI) protocol")
Cc: [email protected]
Acked-by: Nishanth Menon <[email protected]>
Acked-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
This commit is contained in:
Arnd Bergmann 2017-01-11 12:53:05 +01:00
commit 76cefef8e8
1 changed files with 2 additions and 1 deletions
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3
drivers/firmware/ti_sci.c
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@ -202,7 +202,8 @@ static int ti_sci_debugfs_create(struct platform_device *pdev,
info->debug_buffer[info->debug_region_size] = 0;
info->d = debugfs_create_file(strncat(debug_name, dev_name(dev),
sizeof(debug_name)),
sizeof(debug_name) -
sizeof("ti_sci_debug@")),
0444, NULL, info, &ti_sci_debug_fops);
if (IS_ERR(info->d))
return PTR_ERR(info->d);