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linux/drivers/platform/chrome
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Patryk Duda b8774d3137 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 12:47:24 +02:00
..
wilco_ec Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
chromeos_acpi.c platform/chrome: chromeos_acpi: print hex string for ACPI_TYPE_BUFFER 2023-08-10 11:10:56 +08:00
chromeos_laptop.c platform/chrome: fix double-free in chromeos_laptop_prepare() 2022-08-22 06:56:45 +00:00
chromeos_privacy_screen.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +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: Handle events during suspend after resume completion 2024-06-16 13:47:33 +02:00
cros_ec.h platform/chrome: cros_ec_lpc: Separate host command and irq disable 2023-11-20 11:59:08 +01:00
cros_ec_chardev.c platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl 2023-03-24 10:56:28 +08:00
cros_ec_debugfs.c platform/chrome: cros_ec_debugfs: fix wrong EC message version 2024-08-03 08:53:20 +02:00
cros_ec_i2c.c platform/chrome: Switch i2c drivers back to use .probe() 2023-05-29 08:37:29 +08:00
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: use sysfs_emit() instead of scnprintf() 2022-12-26 11:14:34 +08:00
cros_ec_lpc.c platform/chrome: cros_ec_lpc: Separate host command and irq disable 2023-11-20 11:59:08 +01:00
cros_ec_lpc_mec.c platform/chrome: cros_ec_lpc_mec: remove cros_ec_lpc_mec_destroy() 2022-11-01 10:33:02 +08:00
cros_ec_lpc_mec.h platform/chrome: cros_ec_lpc_mec: remove cros_ec_lpc_mec_destroy() 2022-11-01 10:33:02 +08:00
cros_ec_proto.c platform/chrome: cros_ec_proto: Lock device when updating MKBP version 2024-08-11 12:47:24 +02:00
cros_ec_proto_test.c platform/chrome: kunit: initialize lock for fake ec_dev 2023-11-28 17:19:39 +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: Use %*ph for printing hexdump of a small buffer 2023-06-13 12:28:36 +08:00
cros_ec_sysfs.c platform/chrome: use sysfs_emit_at() instead of scnprintf() 2022-12-26 16:14:53 +08:00
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: Configure Retimer cable type 2023-08-26 11:11:07 +02:00
cros_ec_typec.h platform/chrome: cros_ec_typec: Move structs to header 2023-01-09 20:32:53 +00:00
cros_ec_uart.c platform/chrome: cros_ec_uart: properly fix race condition 2024-04-17 11:19:25 +02:00
cros_ec_vbc.c platform/chrome: Constify static attribute_group structs 2021-01-20 16:19:17 +01:00
cros_hps_i2c.c platform/chrome: Switch i2c drivers back to use .probe() 2023-05-29 08:37:29 +08:00
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 Pin D support 2023-05-11 21:17:53 +00:00
cros_typec_vdm.c platform/chrome: cros_typec_vdm: Add Attention support 2023-01-31 18:12:18 +00:00
cros_typec_vdm.h platform/chrome: cros_typec_vdm: Add Attention support 2023-01-31 18:12:18 +00:00
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() 2022-11-25 08:28:28 +00:00
Kconfig platform/chrome: cros_ec_typec: Alter module name with hyphens 2023-01-09 20:32:53 +00:00
Makefile platform/chrome: cros_ec_typec: Add initial VDM support 2023-01-09 20:32:53 +00:00