kernel.git/drivers/gpu/drm/xen, branch linux-5.7.y

drm/xen-front: Fix misused IS_ERR_OR_NULL checks

2020-08-19T06:24:19Z

commit 14dee058610446aa464254fc5c8e88c7535195e0 upstream. The patch c575b7eeb89f: "drm/xen-front: Add support for Xen PV display frontend" from Apr 3, 2018, leads to the following static checker warning: drivers/gpu/drm/xen/xen_drm_front_gem.c:140 xen_drm_front_gem_create() warn: passing zero to 'ERR_CAST' drivers/gpu/drm/xen/xen_drm_front_gem.c 133 struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev, 134 size_t size) 135 { 136 struct xen_gem_object *xen_obj; 137 138 xen_obj = gem_create(dev, size); 139 if (IS_ERR_OR_NULL(xen_obj)) 140 return ERR_CAST(xen_obj); Fix this and the rest of misused places with IS_ERR_OR_NULL in the driver. Fixes: c575b7eeb89f: "drm/xen-front: Add support for Xen PV display frontend" Signed-off-by: Oleksandr Andrushchenko Reported-by: Dan Carpenter Reviewed-by: Dan Carpenter Cc: Link: https://lore.kernel.org/r/20200813062113.11030-3-andr2000@gmail.com Signed-off-by: Juergen Gross Signed-off-by: Greg Kroah-Hartman

drm/xen: fix passing zero to 'PTR_ERR' warning

2020-03-31T15:14:51Z

Fix a static code checker warning: drivers/gpu/drm/xen/xen_drm_front.c:404 xen_drm_drv_dumb_create() warn: passing zero to 'PTR_ERR' Signed-off-by: Ding Xiang Reviewed-by: Oleksandr Andrushchenko Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/1585562347-30214-1-git-send-email-dingxiang@cmss.chinamobile.com

drm/xen: Explicitly disable automatic sending of vblank event

2020-01-30T08:00:51Z

The atomic helpers automatically send out fake VBLANK events if no vblanking has been initialized. This would apply to xen, but xen has its own vblank logic. To avoid interfering with the atomic helpers, disable automatic vblank events explicitly. v5: * update comment v4: * separate commit from core vblank changes Signed-off-by: Thomas Zimmermann Acked-by: Gerd Hoffmann Reviewed-by: Daniel Vetter Reviewed-by: Oleksandr Andrushchenko Link: https://patchwork.freedesktop.org/patch/msgid/20200129120531.6891-16-tzimmermann@suse.de

drm/xen: Simplify fb_create

2019-11-19T21:25:55Z

The current code is a pretty good wtf moment, since we drop the reference before we use it. It's not a big deal, because a) we only use the pointer, so doesn't blow up and the real reason b) fb->obj[0] already holds a full reference for us. Might as well take the real pointer ins't of complicated games that baffle. Reviewed-by: Oleksandr Andrushchenko Signed-off-by: Daniel Vetter Cc: Oleksandr Andrushchenko Cc: xen-devel@lists.xenproject.org Link: https://patchwork.freedesktop.org/patch/msgid/20191115092120.4445-7-daniel.vetter@ffwll.ch

drm/simple-kms: Standardize arguments for callbacks

2019-10-24T11:55:56Z

Passing the wrong type feels icky, everywhere else we use the pipe as the first parameter. Spotted while discussing patches with Thomas Zimmermann. v2: Make xen compile correctly Acked-By: Thomas Zimmermann (v1) Cc: Thomas Zimmermann Cc: Noralf Trønnes Cc: Gerd Hoffmann Cc: Eric Anholt Cc: Emil Velikov Cc: virtualization@lists.linux-foundation.org Cc: Linus Walleij Reviewed-by: Linus Walleij Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20191023101256.20509-1-daniel.vetter@ffwll.ch

Merge tag 'for-linus-5.4-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2019-10-12T21:11:21Z

Pull xen fixes from Juergen Gross: - correct panic handling when running as a Xen guest - cleanup the Xen grant driver to remove printing a pointer being always NULL - remove a soon to be wrong call of of_dma_configure() * tag 'for-linus-5.4-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: Stop abusing DT of_dma_configure API xen/grant-table: remove unnecessary printing x86/xen: Return from panic notifier

xen: Stop abusing DT of_dma_configure API

2019-10-10T15:43:35Z

As the removed comments say, these aren't DT based devices. of_dma_configure() is going to stop allowing a NULL DT node and calling it will no longer work. The comment is also now out of date as of commit 9ab91e7c5c51 ("arm64: default to the direct mapping in get_arch_dma_ops"). Direct mapping is now the default rather than dma_dummy_ops. According to Stefano and Oleksandr, the only other part needed is setting the DMA masks and there's no reason to restrict the masks to 32-bits. So set the masks to 64 bits. Cc: Robin Murphy Cc: Julien Grall Cc: Nicolas Saenz Julienne Cc: Oleksandr Andrushchenko Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Stefano Stabellini Cc: Christoph Hellwig Cc: xen-devel@lists.xenproject.org Signed-off-by: Rob Herring Acked-by: Oleksandr Andrushchenko Reviewed-by: Boris Ostrovsky Signed-off-by: Boris Ostrovsky

drm/xen-front: Make structure fb_funcs constant

2019-08-19T05:32:52Z

Static structure fb_funcs, of type drm_framebuffer_funcs, is used only when it is passed to drm_gem_fb_create_with_funcs() as its last argument. drm_gem_fb_create_with_funcs does not modify its lst argument (fb_funcs) and hence fb_funcs is never modified. Therefore make fb_funcs constant to protect it from further modification. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta Signed-off-by: Oleksandr Andrushchenko Reviewed-by: Oleksandr Andrushchenko Link: https://patchwork.freedesktop.org/patch/msgid/20190813062712.24993-1-nishkadg.linux@gmail.com

drm/xen: drop use of drmP.h

2019-07-15T16:11:30Z

The drmP.h header is deprecated. Drop all uses. Added includes/forwards to the header files and then fixed fallout in the .c files. Signed-off-by: Sam Ravnborg Acked-by: Oleksandr Andrushchenko Acked-by: Emil Velikov Cc: xen-devel@lists.xenproject.org Link: https://patchwork.freedesktop.org/patch/msgid/20190630061922.7254-3-sam@ravnborg.org

drm/xen: Drop drm_gem_prime_export/import

2019-06-21T18:12:05Z

They're the default. Aside: Would be really nice to switch the others over to drm_gem_object_funcs. Reviewed-by: Eric Anholt Reviewed-by: Emil Velikov Reviewed-by: Oleksandr Andrushchenko Signed-off-by: Daniel Vetter Cc: Oleksandr Andrushchenko Cc: xen-devel@lists.xenproject.org Link: https://patchwork.freedesktop.org/patch/msgid/20190614203615.12639-39-daniel.vetter@ffwll.ch