From 2d1155478fb6f972b3a97cbf13151ee4f078a164 Mon Sep 17 00:00:00 2001 From: Matthijs Kooijman Date: Thu, 3 Oct 2013 09:46:25 +0200 Subject: [PATCH] staging: dwc2: Make dwc2_hw_params.host_channels large enough The hardware offers a 4-bit register containing the number of host channels. However, the values of these register mean 1-16 host channels, not 0-15. Since the dwc2_hw_params struct stores the actual number of host channels supported instead of the raw register value, it should be 5 bits wide instead of 4. Before this commit, hardware with 16 host channels would overflow the field, making it appear as 0 channels. This bug was introduced in commit 9badec2 (staging: dwc2: interpret all hwcfg and related register at init time). Reported-by: Dinh Nguyen Signed-off-by: Matthijs Kooijman Acked-by: Paul Zimmerman Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dwc2/core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/dwc2/core.h b/drivers/staging/dwc2/core.h index f7ba34b7071c..fab718d9b326 100644 --- a/drivers/staging/dwc2/core.h +++ b/drivers/staging/dwc2/core.h @@ -294,7 +294,7 @@ struct dwc2_hw_params { unsigned dev_token_q_depth:5; unsigned max_transfer_size:26; unsigned max_packet_count:11; - unsigned host_channels:4; + unsigned host_channels:5; unsigned hs_phy_type:2; unsigned fs_phy_type:2; unsigned i2c_enable:1; -- 2.20.1