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qemu/hw/display
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Markus Armbruster 386f6c07d2 error: Avoid error_propagate() after migrate_add_blocker() 
When migrate_add_blocker(blocker, &errp) is followed by
error_propagate(errp, err), we can often just as well do
migrate_add_blocker(..., errp).

Do that with this Coccinelle script:

    @@
    expression blocker, err, errp;
    expression ret;
    @@
    -    ret = migrate_add_blocker(blocker, &err);
    -    if (err) {
    +    ret = migrate_add_blocker(blocker, errp);
    +    if (ret < 0) {
             ... when != err;
    -        error_propagate(errp, err);
             ...
         }

    @@
    expression blocker, err, errp;
    @@
    -    migrate_add_blocker(blocker, &err);
    -    if (err) {
    +    if (migrate_add_blocker(blocker, errp) < 0) {
             ... when != err;
    -        error_propagate(errp, err);
             ...
         }

Double-check @err is not used afterwards.  Dereferencing it would be
use after free, but checking whether it's null would be legitimate.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-43-armbru@redhat.com>
2020-07-10 15:18:08 +02:00
..
ads7846.c Replace uses of FROM_SSI_SLAVE() macro with QOM casts 2020-07-03 16:59:46 +01:00
artist.c hw/display: Include local 'framebuffer.h' 2020-05-18 15:40:04 +02:00
ati_2d.c ati-vga: Fix checks in ati_2d_blt() to avoid crash 2020-04-07 09:25:23 +02:00
ati_dbg.c ati-vga: Add dummy MEM_SDRAM_MODE_REG 2020-06-30 22:54:24 +02:00
ati_int.h ati-vga: Implement dummy VBlank IRQ 2019-08-22 10:04:20 +02:00
ati_regs.h ati-vga: Add dummy MEM_SDRAM_MODE_REG 2020-06-30 22:54:24 +02:00
ati.c ati-vga: Add dummy MEM_SDRAM_MODE_REG 2020-06-30 22:54:24 +02:00
bcm2835_fb.c qom: Don't handle impossible object_property_get_link() failure 2020-07-10 15:18:08 +02:00
blizzard.c display/blizzard: use extract16() for fix clang analyzer warning in blizzard_draw_line16_32() 2020-05-04 11:17:27 +02:00
bochs-display.c qom: Drop parameter @errp of object_property_add() & friends 2020-05-15 07:07:58 +02:00
cg3.c hw/display/cg3: Convert debug printf()s to trace events 2020-05-28 11:38:57 +02:00
cirrus_vga_internal.h hw/display/cirrus_vga: Move "isa-cirrus-vga" device into a separate file 2018-10-15 09:57:33 +02:00
cirrus_vga_isa.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
cirrus_vga_rop2.h cirrus: fix PUTPIXEL macro 2017-03-27 12:14:45 +02:00
cirrus_vga_rop.h cirrus: fix off-by-one in cirrus_bitblt_rop_bkwd_transp_*_16 2017-03-17 10:23:44 +01:00
cirrus_vga.c hw/display/cirrus_vga: Fix code mis-indentation 2020-06-05 09:17:23 +02:00
dpcd.c hw/display/dpcd: Convert debug printf()s to trace events 2020-05-28 11:38:57 +02:00
edid-generate.c Arithmetic error in EDID generation fixed 2020-03-02 08:20:30 +01:00
edid-region.c Include exec/memory.h slightly less 2019-08-16 13:31:52 +02:00
exynos4210_fimd.c hw/display/exynos4210_fimd: Use qemu_log_mask(GUEST_ERROR) 2020-05-28 11:38:57 +02:00
framebuffer.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
framebuffer.h framebuffer: set DIRTY_MEMORY_VGA on RAM that is used for the framebuffer 2015-07-24 13:57:45 +02:00
g364fb.c hw/display: Let devices own the MemoryRegion they create 2020-03-17 15:18:48 +01:00
i2c-ddc.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
jazz_led.c mips: jazz: Renovate coding style 2019-12-16 13:04:46 +01:00
Kconfig hppa: Add emulation of Artist graphics 2020-01-27 10:49:51 -08:00
macfb.c hw/display: Let devices own the MemoryRegion they create 2020-03-17 15:18:48 +01:00
Makefile.objs vga: build virtio-gpu as module 2020-07-07 15:33:59 +02:00
milkymist-tmu2.c sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
milkymist-vgafb_template.h milkymist-vgafb: swap pixel data in source buffer 2014-02-04 19:34:30 +01:00
milkymist-vgafb.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
next-fb.c hw/display: Include local 'framebuffer.h' 2020-05-18 15:40:04 +02:00
omap_dss.c hw/display/omap_dss: Replace fprintf() call by qemu_log_mask(LOG_UNIMP) 2020-05-28 11:38:57 +02:00
omap_lcd_template.h omap_lcdc: Remove support for DEPTH != 32 2016-05-12 13:22:24 +01:00
omap_lcdc.c Remove unnecessary cast when using the cpu_[physical]_memory API 2020-02-20 14:47:08 +01:00
pl110_template.h display: avoid multi-statement macro 2014-01-31 14:47:33 +00:00
pl110.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
pxa2xx_lcd.c hw/display/pxa2xx_lcd: Replace printf() call by qemu_log_mask() 2020-05-28 11:38:57 +02:00
pxa2xx_template.h display: avoid multi-statement macro 2014-01-31 14:47:33 +00:00
qxl-logger.c hw/display: Clean up includes 2016-01-29 15:07:24 +00:00
qxl-render.c console: add graphic_hw_update_done() 2020-01-02 13:54:57 +04:00
qxl.c lockable: replaced locks with lock guard macros where appropriate 2020-05-04 16:07:43 +01:00
qxl.h qxl: introduce hardware revision 5 2020-02-13 08:31:40 +01:00
ramfb-standalone.c Revert "hw/display/ramfb: initialize fw-config space with xres/ yres" 2020-05-18 15:42:34 +02:00
ramfb.c ramfb: fix size calculation 2020-05-18 15:43:51 +02:00
sii9022.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
sm501_template.h sm501: Misc clean ups 2017-04-24 12:32:12 +01:00
sm501.c sm501: Fix and optimize overlap check 2020-06-30 22:50:04 +02:00
ssd0303.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ssd0323.c Replace uses of FROM_SSI_SLAVE() macro with QOM casts 2020-07-03 16:59:46 +01:00
tc6393xb_template.h display: avoid multi-statement macro 2014-01-31 14:47:33 +00:00
tc6393xb.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
tcx.c hw: Remove unnecessary DEVICE() cast 2020-05-15 07:08:52 +02:00
trace-events sm501: Convert debug printfs to traces 2020-06-30 22:46:28 +02:00
vga_int.h vga: cleanup mapping of VRAM for non-PCI VGA 2019-12-18 02:34:13 +01:00
vga_regs.h Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
vga-access.h vga: move access helpers to separate include file 2019-09-19 10:37:46 +02:00
vga-helpers.h vga: move access helpers to separate include file 2019-09-19 10:37:46 +02:00
vga-isa-mm.c vga: cleanup mapping of VRAM for non-PCI VGA 2019-12-18 02:34:13 +01:00
vga-isa.c hw: Remove unnecessary DEVICE() cast 2020-05-15 07:08:52 +02:00
vga-pci.c qom: Drop parameter @errp of object_property_add() & friends 2020-05-15 07:07:58 +02:00
vga.c vga: cleanup mapping of VRAM for non-PCI VGA 2019-12-18 02:34:13 +01:00
vhost-user-gpu-pci.c qom: Drop parameter @errp of object_property_add() & friends 2020-05-15 07:07:58 +02:00
vhost-user-gpu.c qom: Drop parameter @errp of object_property_add() & friends 2020-05-15 07:07:58 +02:00
vhost-user-vga.c qom: Drop parameter @errp of object_property_add() & friends 2020-05-15 07:07:58 +02:00
virtio-gpu-3d.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
virtio-gpu-base.c error: Avoid error_propagate() after migrate_add_blocker() 2020-07-10 15:18:08 +02:00
virtio-gpu-pci.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
virtio-gpu.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
virtio-vga.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
virtio-vga.h Clean up a header guard symbols (again) 2019-06-12 13:20:21 +02:00
vmware_vga.c hw/display/vmware_vga: Let the PCI device own its I/O MemoryRegion 2020-05-28 11:38:57 +02:00
xenfb.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
xlnx_dp.c auxbus: Eliminate aux_create_slave() 2020-06-15 22:05:28 +02:00