4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Rasmus Villemoes <[email protected]> commit ed3f9fd1e865975ceefdb2a43b453e090b1fd787 upstream. This fails to undo the setup for pin==0; moreover, something interesting happens if the setup failed already at pin==0. Signed-off-by: Rasmus Villemoes <[email protected]> Fixes: f899fc64cda8 ("drm/i915: use GMBUS to manage i2c links") Signed-off-by: Jani Nikula <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] (cherry picked from commit 2417c8c03f508841b85bf61acc91836b7b0e2560) Signed-off-by: Jani Nikula <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/gpu/drm/i915/intel_i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -675,7 +675,7 @@ int intel_setup_gmbus(struct drm_device return 0; err: - while (--pin) { + while (pin--) { if (!intel_gmbus_is_valid_pin(dev_priv, pin)) continue;
