Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
xen/drm: switch xen_drm_front to use INVALID_GRANT_REF
Instead of using a private macro for an invalid grant reference use
the common one.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 only
Signed-off-by: Juergen Gross <jgross@suse.com>
+2
-11
-9
drivers/gpu/drm/xen/xen_drm_front.h
-9
drivers/gpu/drm/xen/xen_drm_front.h
···
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80
/* timeout in ms to wait for backend to respond */
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#define XEN_DRM_FRONT_WAIT_BACK_MS 3000
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-
#ifndef GRANT_INVALID_REF
84
-
/*
85
-
* Note on usage of grant reference 0 as invalid grant reference:
86
-
* grant reference 0 is valid, but never exposed to a PV driver,
87
-
* because of the fact it is already in use/reserved by the PV console.
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-
*/
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-
#define GRANT_INVALID_REF 0
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-
#endif
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-
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struct xen_drm_front_info {
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struct xenbus_device *xb_dev;
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struct xen_drm_front_drm_info *drm_info;
+2
-2
drivers/gpu/drm/xen/xen_drm_front_evtchnl.c
+2
-2
drivers/gpu/drm/xen/xen_drm_front_evtchnl.c
···
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xenbus_free_evtchn(front_info->xb_dev, evtchnl->port);
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/* end access and free the page */
150
-
if (evtchnl->gref != GRANT_INVALID_REF)
150
+
if (evtchnl->gref != INVALID_GRANT_REF)
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gnttab_end_foreign_access(evtchnl->gref, page);
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memset(evtchnl, 0, sizeof(*evtchnl));
···
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evtchnl->index = index;
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evtchnl->front_info = front_info;
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evtchnl->state = EVTCHNL_STATE_DISCONNECTED;
171
-
evtchnl->gref = GRANT_INVALID_REF;
171
+
evtchnl->gref = INVALID_GRANT_REF;
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page = get_zeroed_page(GFP_NOIO | __GFP_HIGH);
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if (!page) {