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RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Score: -4.51 X-Spam-Flag: NO Hi Am 13.03.25 um 15:25 schrieb Luca Ceresoli: > When aperture_remove_all_conflicting_devices() fails, the current code > returns without going through the rollback actions at the end of the > function, thus the actions done by drm_dev_alloc() and mxsfb_load() are not > undone. > > Fix by using a goto statament, as done for the previous and following error > conditions. > > Fixes: c8e7b185d45b ("drm/mxsfb: Remove generic DRM drivers in probe function") > Signed-off-by: Luca Ceresoli > --- > The offending commit is not yet merged into master, and even less in a > released kernel, so this does not need to go through stable. > --- > drivers/gpu/drm/mxsfb/mxsfb_drv.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c > index c183b1112bc4e9fe4f3b048a2b6e4c98d1d47cb3..b4273e678d26dbc3dee2014266d61470da4e8010 100644 > --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c > +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c > @@ -365,9 +365,10 @@ static int mxsfb_probe(struct platform_device *pdev) > * located anywhere in RAM > */ > ret = aperture_remove_all_conflicting_devices(mxsfb_driver.name); > - if (ret) > - return dev_err_probe(&pdev->dev, ret, > - "can't kick out existing framebuffers\n"); > + if (ret) { > + dev_err_probe(&pdev->dev, ret, "can't kick out existing framebuffers\n"); > + goto err_unload; > + } I must have missed that when I reviewed the patch. But this call should happen much earlier. right at the top of the probe function before drm_dev_alloc(). Conflicting drivers need to be kicked out before setting up DRM. Could you please send a patch to move the call to the top? No extra cleanup would be required then. Best regards Thomas > > ret = drm_dev_register(drm, 0); > if (ret) > > --- > base-commit: f9f087d946266bc5da7c3a17bd8fd9d01969e3cf > change-id: 20250313-mxsfb_probe-fix-rollback-on-error-3074b9080f34 > > Best regards, -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)