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linux/drivers/platform/chrome
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Patryk Duda 1b3777d2f2 platform/chrome: cros_ec_proto: Lock device when updating MKBP version 
commit df615907f1 upstream.

The cros_ec_get_host_command_version_mask() function requires that the
caller must have ec_dev->lock mutex before calling it. This requirement
was not met and as a result it was possible that two commands were sent
to the device at the same time.

The problem was observed while using UART backend which doesn't use any
additional locks, unlike SPI backend which locks the controller until
response is received.

Fixes: f74c7557ed ("platform/chrome: cros_ec_proto: Update version on GET_NEXT_EVENT failure")
Cc: stable@vger.kernel.org
Signed-off-by: Patryk Duda <patrykd@google.com>
Link: https://lore.kernel.org/r/20240730104425.607083-1-patrykd@google.com
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-08-11 12:35:59 +02:00
..
wilco_ec platform/chrome: wilco_ec: event: Fix typo in comment 2022-06-24 04:01:13 +00:00
chromeos_acpi.c platform/chrome: chromeos_acpi: print hex string for ACPI_TYPE_BUFFER 2023-09-13 09:43:03 +02:00
chromeos_laptop.c platform/chrome: fix double-free in chromeos_laptop_prepare() 2022-08-22 06:56:45 +00:00
chromeos_privacy_screen.c platform/chrome: Add driver for ChromeOS privacy-screen 2022-01-10 12:17:37 +01:00
chromeos_pstore.c chrome platform changes for 5.8 2020-06-04 10:54:45 -07:00
chromeos_tbmc.c platform/chrome: chromeos_tbmc: Report wake events 2019-09-12 16:01:35 +02:00
cros_ec.c platform/chrome: cros_ec: Notify the PM of wake events during resume 2022-09-19 10:34:38 +08:00
cros_ec.h platform/chrome: cros_ec: Make cros_ec_unregister() return void 2022-02-09 13:00:43 +00:00
cros_ec_chardev.c platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl 2023-03-30 12:49:12 +02:00
cros_ec_debugfs.c platform/chrome: cros_ec_debugfs: fix wrong EC message version 2024-08-03 08:48:52 +02:00
cros_ec_i2c.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
cros_ec_ishtp.c platform/chrome: correct cros_ec_prepare_tx() usage 2022-05-16 10:01:51 +08:00
cros_ec_lightbar.c platform/chrome: Constify static attribute_group structs 2021-01-20 16:19:17 +01:00
cros_ec_lpc.c platform/chrome: correct cros_ec_prepare_tx() usage 2022-05-16 10:01:51 +08:00
cros_ec_lpc_mec.c platform/chrome: cros_ec_lpc: Use DEFINE_MUTEX() for mutex lock 2021-04-21 10:00:30 +02:00
cros_ec_lpc_mec.h platform/chrome: cros_ec: Remove cros_ec dependency in lpc_mec 2019-02-11 10:07:40 +01:00
cros_ec_proto.c platform/chrome: cros_ec_proto: Lock device when updating MKBP version 2024-08-11 12:35:59 +02:00
cros_ec_proto_test.c platform/chrome: kunit: initialize lock for fake ec_dev 2023-11-28 17:06:56 +00:00
cros_ec_rpmsg.c platform/chrome: correct cros_ec_prepare_tx() usage 2022-05-16 10:01:51 +08:00
cros_ec_sensorhub.c platform/chrome: cros_ec_sensorhub: simplify getting .driver_data 2021-09-27 09:18:58 +02:00
cros_ec_sensorhub_ring.c platform: chrome: Split trace include file 2022-03-31 16:56:29 -07:00
cros_ec_sensorhub_trace.h platform: chrome: Split trace include file 2022-03-31 16:56:29 -07:00
cros_ec_spi.c platform/chrome: cros_ec_spi: drop BUG_ON() if din isn't large enough 2022-05-16 10:01:52 +08:00
cros_ec_sysfs.c platform/chrome: cros_ec_sysfs: Add cold-ap-off to sysfs reboot. 2021-01-20 16:19:17 +01:00
cros_ec_trace.c platform/chrome: cros_ec: Add command for regulator control. 2020-06-15 22:40:14 +01:00
cros_ec_trace.h platform/chrome: use macros for passthru indexes 2022-06-10 02:31:42 +00:00
cros_ec_typec.c platform/chrome: cros_ec_typec: Update port DP VDO 2023-03-10 09:32:52 +01:00
cros_ec_vbc.c platform/chrome: Constify static attribute_group structs 2021-01-20 16:19:17 +01:00
cros_kbd_led_backlight.c platform/chrome: cros_kbd_led_backlight: fix build warning 2022-07-20 01:22:59 +00:00
cros_kunit_util.c platform/chrome: cros_kunit_util: add default value for msg->result 2022-07-21 08:49:28 +00:00
cros_kunit_util.h platform/chrome: cros_kunit_util: add default value for msg->result 2022-07-21 08:49:28 +00:00
cros_typec_switch.c platform/chrome: cros_typec_switch: Add missing fwnode_handle_put() 2023-05-11 23:03:16 +09:00
cros_usbpd_logger.c platform/chrome: cros_usbpd_logger: Add __printf annotation to append_str() 2020-05-04 14:02:01 -07:00
cros_usbpd_notify.c platform/chrome: cros_usbpd_notify: Fix error handling in cros_usbpd_notify_init() 2022-12-31 13:31:57 +01:00
Kconfig platform/chrome: cros_typec_switch: Add switch driver 2022-08-18 22:20:35 +00:00
Makefile platform/chrome: cros_typec_switch: Add switch driver 2022-08-18 22:20:35 +00:00