evie/android_kernel_oneplus_msm8998
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usb: pd: Don't reject sink request based on max current

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A fixed sink PDO request includes both operating current and
max current. Although the max current requested may be greater
than the available source advertisement, as per spec only the
operating current request needs to be considered. The sink will
likely have also set the Capability Mismatch bit as well. Hence,
don't reject the request otherwise the sink will keep
re-requesting and never enter a contract.

Change-Id: Ia15e2e17abe43f2bcbc1fe7011b70ab0e0f5d9eb
Signed-off-by: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Jack Pham 2018-08-17 10:52:17 -07:00 • committed by Gerrit - the friendly Code Review server
parent 0524c91128
commit bccbbac9f0
1 changed files with 0 additions and 2 deletions
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2
drivers/usb/pd/policy_engine.c
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@ -1113,8 +1113,6 @@ static void usbpd_set_state(struct usbpd *pd, enum usbpd_state next_state)
case PE_SRC_NEGOTIATE_CAPABILITY:
if (PD_RDO_OBJ_POS(pd->rdo) != 1 ||
PD_RDO_FIXED_CURR(pd->rdo) >
PD_SRC_PDO_FIXED_MAX_CURR(*default_src_caps) ||
PD_RDO_FIXED_CURR_MINMAX(pd->rdo) >
PD_SRC_PDO_FIXED_MAX_CURR(*default_src_caps)) {
/* send Reject */
ret = pd_send_msg(pd, MSG_REJECT, NULL, 0, SOP_MSG);