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chrome-platform fixes for v6.11-rc2

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Fix a race condition that sends multiple host commands at a time.
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Merge tag 'chrome-platform-fixes-for-v6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome-platform fix from Tzung-Bi Shih:
 "Fix a race condition that sends multiple host commands at a time"

* tag 'chrome-platform-fixes-for-v6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec_proto: Lock device when updating MKBP version
This commit is contained in:
Linus Torvalds 2024-07-30 12:53:52 -07:00
commit c91a7dee05
1 changed files with 2 additions and 0 deletions
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2
drivers/platform/chrome/cros_ec_proto.c
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@ -813,9 +813,11 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev,
if (ret == -ENOPROTOOPT) {
dev_dbg(ec_dev->dev,
"GET_NEXT_EVENT returned invalid version error.\n");
mutex_lock(&ec_dev->lock);
ret = cros_ec_get_host_command_version_mask(ec_dev,
EC_CMD_GET_NEXT_EVENT,
&ver_mask);
mutex_unlock(&ec_dev->lock);
if (ret < 0 || ver_mask == 0)
/*
* Do not change the MKBP supported version if we can't