staging: dwc2: Make dwc2_hw_params.host_channels large enough

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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 <dinguyen@altera.com>
Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Matthijs Kooijman 2013-10-03 09:46:25 +02:00 • committed by Greg Kroah-Hartman

parent ab06e0f20e

commit 2d1155478f

1 changed files with 1 additions and 1 deletions

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drivers/staging/dwc2/core.h

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