haraldwolff/qemu-patch-raspberry4
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qemu-patch-raspberry4/hw
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Peter Maydell 9706e0162d hw/i2c/bitbang_i2c: Handle NACKs from devices 
If the guest attempts to talk to a nonexistent device over i2c,
the i2c_start_transfer() function will return non-zero, indicating
that the bus is signalling a NACK. Similarly, if the i2c_send()
function returns nonzero then the target device returned a NACK.
Handle this possibility in the bitbang_i2c code, by returning
the state machine to the STOPPED state and returning the NACK
bit to the guest.

This bit of missing functionality was spotted by Coverity
(it noticed that we weren't checking the return value from
i2c_start_transfer()).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1477332749-27098-1-git-send-email-peter.maydell@linaro.org
2016-11-07 10:01:15 +00:00
..
9pfs 9pfs: drop excessive error message from virtfs_reset() 2016-11-01 12:03:03 +01:00
acpi acpi: fix assert failure caused by commit 35c5a52d 2016-11-01 19:21:09 +02:00
adc STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00
alpha sun4uv: fix serial initialization regression 2016-10-24 15:27:20 +02:00
arm hw/arm/tosa: Fix reset handling 2016-10-28 15:51:27 +01:00
audio audio: intel-hda: check stream entry count during transfer 2016-10-26 14:51:44 +02:00
block virtio, pc: fixes and features 2016-11-03 14:41:53 +00:00
bt char: replace avail_connections 2016-10-24 15:46:10 +02:00
char char: cadence: check baud rate generator and divider values 2016-11-07 10:00:24 +00:00
core nvdimm acpi: introduce fit buffer 2016-11-01 19:21:09 +02:00
cpu cpu: Abstract CPU core type 2016-06-17 16:33:48 +10:00
cris cris: Fix broken header guard in hw/cris/boot.h 2016-07-12 16:20:46 +02:00
display Xen 2016/10/28 2016-10-31 12:35:39 +00:00
dma hw/dma/pl080: Fix bad bit mask (PL080_CONF_M1 | PL080_CONF_M1) 2016-10-17 19:22:17 +01:00
gpio i.MX: Fix GPIO ISR register write 2016-10-28 15:51:27 +01:00
i2c hw/i2c/bitbang_i2c: Handle NACKs from devices 2016-11-07 10:01:15 +00:00
i386 Xen 2016/11/02 2016-11-04 09:26:24 +00:00
ide macio: switch over to new byte-aligned DMA helpers 2016-10-27 16:29:13 -04:00
input adb: change handler only when recognized 2016-10-28 09:38:26 +11:00
intc nvic: set pending status for not active interrupts 2016-11-07 10:00:24 +00:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi ipmi: Add graceful shutdown handling to the external BMC 2016-11-01 19:21:09 +02:00
isa char: remove init callback 2016-10-24 15:27:20 +02:00
lm32 Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
m68k m68k: change default system clock for m5208evb 2016-10-08 11:25:29 +03:00
mem pc: memhp: enable nvdimm device hotplug 2016-11-01 19:21:09 +02:00
microblaze clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
mips clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
misc milkymist-pfpu: fix potential integer overflow 2016-10-28 18:17:23 +03:00
moxie hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
net xen: Rename xen_be_send_notify 2016-10-28 17:54:21 -07:00
nvram trivial patches for 2016-10-28 2016-10-31 11:58:30 +00:00
openrisc hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
pci trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
pci-bridge clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
pci-host apb: convert init to realize 2016-07-29 00:07:09 +03:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc Base patches for MTTCG enablement. 2016-10-31 15:29:12 +00:00
s390x virtio, pc: fixes and features 2016-11-03 14:41:53 +00:00
scsi virtio, pc: fixes and features 2016-11-03 14:41:53 +00:00
sd vmstateify ssi-sd 2016-09-22 18:13:08 +01:00
sh4 sh4: fix broken link to documentation 2016-09-15 15:32:22 +03:00
smbios smbios: fix uuid copy 2016-09-29 11:43:22 +08:00
sparc nvram: Rename openbios_firmware_abi.h into sun_nvram.h 2016-10-28 09:36:58 +11:00
sparc64 nvram: Rename openbios_firmware_abi.h into sun_nvram.h 2016-10-28 09:36:58 +11:00
ssi xilinx: fix buffer overflow on realize 2016-10-24 15:27:20 +02:00
timer clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
tpm clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
tricore tricore: remove useless cast 2016-09-15 15:32:22 +03:00
unicore32 clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
usb Xen 2016/10/28 2016-10-31 12:35:39 +00:00
vfio vfio: Add support for mmapping sub-page MMIO BARs 2016-10-31 09:53:04 -06:00
virtio virtio-crypto: using bh to handle dataq's requests 2016-11-01 19:21:08 +02:00
watchdog nmi: remove x86 specific nmi handling 2016-05-23 16:53:46 +02:00
xen hw/xen/xen_pvdev: Include qemu/log.h for qemu_log_vprintf() 2016-11-02 12:26:04 -07:00
xenpv xenpv: Fix qemu_uuid compiling error 2016-09-29 11:43:17 +08:00
xtensa char: remove init callback 2016-10-24 15:27:20 +02:00
Makefile.objs STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00