On Wed, Sep 18, 2024 at 01:48:20AM +0900, Jeongjun Park wrote:
> iowarrior_read() uses the iowarrior dev structure, but does not use any
> lock on the structure. This can cause various bugs including data-races,
> so it is more appropriate to use a mutex lock to safely protect the
> iowarrior dev structure. When using a mutex lock, you should split the
> branch to prevent blocking when the O_NONBLOCK flag is set.
>
> In addition, it is unnecessary to check for NULL on the iowarrior dev
> structure obtained by reading file->private_data. Therefore, it is
> better to remove the check.
>
> Fixes: 946b960d13c1 ("USB: add driver for iowarrior devices.")
> Signed-off-by: Jeongjun Park <aha310510@xxxxxxxxx>
> ---
> drivers/usb/misc/iowarrior.c | 46 ++++++++++++++++++++++++++++--------
> 1 file changed, 36 insertions(+), 10 deletions(-)
Hi,
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