drm: remove the newline for CRC source name.
[ Upstream commit 72a848f5c46bab4c921edc9cbffd1ab273b2be17 ] userspace may transfer a newline, and this terminating newline is replaced by a '\0' to avoid followup issues. 'len-1' is the index to replace the newline of CRC source name. v3: typo fix (Sam) v2: update patch subject, body and format. (Sam) Cc: Leo Li <sunpeng.li@amd.com> Cc: Harry Wentland <Harry.Wentland@amd.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Dingchen Zhang <dingchen.zhang@amd.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190610134751.14356-1-dingchen.zhang@amd.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -101,8 +101,8 @@ static ssize_t crc_control_write(struct file *file, const char __user *ubuf,
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if (IS_ERR(source))
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return PTR_ERR(source);
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if (source[len] == '\n')
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source[len] = '\0';
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if (source[len - 1] == '\n')
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source[len - 1] = '\0';
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spin_lock_irq(&crc->lock);
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