Re: [PATCH v4 1/1] bus: mhi: pci_generic: fix Rolling Wireless RW151 MBIM channel ring size
From: Krishna Chaitanya Chundru <hidden>
Date: 2026-07-03 04:30:17
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linux-arm-msm
On 7/2/2026 3:30 PM, zwq2226404116@163.com wrote:
From: Wanquan Zhong <redacted> bus: mhi: pci_generic: fix Rolling Wireless RW151 MBIM channel ring size Increase RW151 MBIM channel ring size from 4 to 32 to match the device firmware channel configuration.
can you include what is the side affect if we don't have this change, like what is functional issue, low throughput etc. - Krishna Chaitanya.
quoted hunk ↗ jump to hunk
Signed-off-by: Wanquan Zhong <redacted> --- v3 -> v4: Drop no_m3 quirk per review; keep RW151 MBIM ring size fix only drivers/bus/mhi/host/pci_generic.c | 2 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c index d598bb3b3981..d686aef6e158 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c@@ -949,8 +949,8 @@ static const struct mhi_pci_dev_info mhi_rolling_rw135r_info = { static const struct mhi_channel_config mhi_rolling_rw151_channels[] = { MHI_CHANNEL_CONFIG_UL(4, "DIAG", 16, 1), MHI_CHANNEL_CONFIG_DL(5, "DIAG", 16, 1), - MHI_CHANNEL_CONFIG_UL(12, "MBIM", 4, 0), - MHI_CHANNEL_CONFIG_DL(13, "MBIM", 4, 0), + MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0), + MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0), MHI_CHANNEL_CONFIG_UL(14, "NMEA", 32, 0), MHI_CHANNEL_CONFIG_DL(15, "NMEA", 32, 0), MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0), --2.50.0