From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Date: Tue, 02 Jun 2020 10:38:18 +0000 Subject: [PATCH 2/2] video: fbdev: amifb: add FIXMEs about {put,get}_user() failures Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: linux-m68k , Geert Uytterhoeven , linux-kernel@vger.kernel.org, Al Viro Since we lack the hardware (or proper emulator setup) for testing needed changes add FIXMEs to document the issues (so at least they are not forgotten). Cc: Al Viro Cc: Geert Uytterhoeven Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/video/fbdev/amifb.c | 2 ++ 1 file changed, 2 insertions(+) Index: b/drivers/video/fbdev/amifb.c =================================--- a/drivers/video/fbdev/amifb.c +++ b/drivers/video/fbdev/amifb.c @@ -1866,6 +1866,7 @@ static int ami_get_var_cursorinfo(struct "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; " "swap %1 ; lslw #1,%1 ; roxlb #1,%0" : "=d" (color), "=d" (datawords) : "1" (datawords)); + /* FIXME: check the return value + test the change */ put_user(color, data++); } if (bits > 0) { @@ -1923,6 +1924,7 @@ static int ami_set_var_cursorinfo(struct bits = 16; words = delta; datawords = 0; for (width = (short)var->width - 1; width >= 0; width--) { unsigned long tdata = 0; + /* FIXME: check the return value + test the change */ get_user(tdata, data); data++; asm volatile (