Commit 6e228d8c authored by Alex Elder's avatar Alex Elder Committed by David S. Miller
Browse files

net: ipa: HOLB register sometimes must be written twice 



Starting with IPA v4.5, the HOL_BLOCK_EN register must be written
twice when enabling head-of-line blocking avoidance.

Fixes: 84f9bd12 ("soc: qcom: ipa: IPA endpoints")
Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 10a2308f

drivers/net/ipa/ipa_endpoint.c

+3 −0
Original line number Diff line number Diff line
@@ -868,6 +868,9 @@ ipa_endpoint_init_hol_block_enable(struct ipa_endpoint *endpoint, bool enable) 
	val = enable ? HOL_BLOCK_EN_FMASK : 0;

	offset = IPA_REG_ENDP_INIT_HOL_BLOCK_EN_N_OFFSET(endpoint_id);

	iowrite32(val, endpoint->ipa->reg_virt + offset);

	/* When enabling, the register must be written twice for IPA v4.5+ */

	if (enable && endpoint->ipa->version >= IPA_VERSION_4_5)

		iowrite32(val, endpoint->ipa->reg_virt + offset);

}



void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa)