[reactos] 01/04: [FRAMEBUF] Correctly check the return value of the EngDeviceIoControl() call and return adequate value in DrvAssertMode().

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=3f716870ca878799ef670…

commit 3f716870ca878799ef6700d6eea83fcdb0945f51
Author:     Hermès Bélusca-Maïto <hermes.belusca-maito(a)reactos.org>
AuthorDate: Tue Jan 1 20:44:24 2019 +0100
Commit:     Hermès Bélusca-Maïto <hermes.belusca-maito(a)reactos.org>
CommitDate: Wed Jan 2 21:12:19 2019 +0100

    [FRAMEBUF] Correctly check the return value of the EngDeviceIoControl() call and
return adequate value in DrvAssertMode().
---
 win32ss/drivers/displays/framebuf/surface.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/win32ss/drivers/displays/framebuf/surface.c
b/win32ss/drivers/displays/framebuf/surface.c
index 43b3b89b96..b0b74da295 100644
--- a/win32ss/drivers/displays/framebuf/surface.c
+++ b/win32ss/drivers/displays/framebuf/surface.c
@@ -174,27 +174,28 @@ DrvAssertMode(
 
    if (bEnable)
    {
-      BOOLEAN Result;
       /*
        * Reinitialize the device to a clean state.
        */
-      Result = EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_SET_CURRENT_MODE,
-                                  &(ppdev->ModeIndex), sizeof(ULONG), NULL, 0,
-                                  &ulTemp);
+      if (EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_SET_CURRENT_MODE,
+                             &(ppdev->ModeIndex), sizeof(ULONG), NULL, 0,
+                             &ulTemp))
+      {
+          /* We failed, bail out */
+          return FALSE;
+      }
       if (ppdev->BitsPerPixel == 8)
       {
 	     IntSetPalette(dhpdev, ppdev->PaletteEntries, 0, 256);
       }
 
-      return Result;
-
+      return TRUE;
    }
    else
    {
       /*
        * Call the miniport driver to reset the device to a known state.
        */
-
       return !EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_RESET_DEVICE,
                                  NULL, 0, NULL, 0, &ulTemp);
    }