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pd: do not respond to unknown SVDMs

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bug fix: if we see an unknown SVDM, do not respond to it.

BUG=none
BRANCH=samus
TEST=test with third party that sends unknown SVDM

Change-Id: I3ef6c38be029d57bf3784ba832b7ae137f379049
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/224179
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Alec Berg
2014-10-17 16:10:48 -07:00
committed by chrome-internal-fetch
parent 5d76ffc62d
commit 647ac36fda
1 changed files with 4 additions and 0 deletions
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4
common/usb_pd_policy.c
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@@ -263,6 +263,8 @@ int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload)
case CMD_EXIT_MODE:
rsize = pd_exit_mode(port, payload);
break;
default:
rsize = 0;
}
payload[0] &= ~VDO_CMDT(0);
payload[0] |= VDO_CMDT(CMDT_INIT);
@@ -284,6 +286,8 @@ int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload)
case CMD_EXIT_MODE:
rsize = 0;
break;
default:
rsize = 0;
}
} else if (cmd_type == CMDT_RSP_NAK) {
/* nothing to do */