drm/vmwgfx: Fix incorrect write to read-only register v2:

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commit 4e578080ed upstream.

Commit "drm/vmwgfx: correct fb_fix_screeninfo.line_length", while fixing a
vmwgfx fbdev bug, also writes the pitch to a supposedly read-only register:
SVGA_REG_BYTES_PER_LINE, while it should be (and also in fact is) written to
SVGA_REG_PITCHLOCK.

This patch is Cc'd stable because of the unknown effects writing to this
register might have, particularly on older device versions.

v2: Updated log message.

Cc: Christopher Friedt <chrisfriedt@gmail.com>
Tested-by: Christopher Friedt <chrisfriedt@gmail.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Thomas Hellstrom 2014-07-02 15:47:04 +02:00 • committed by Greg Kroah-Hartman

parent c3bdaf3d46

commit 509a64038c

1 changed files with 0 additions and 1 deletions

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drivers/gpu/drm/vmwgfx/vmwgfx_fb.c

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