linux-kernel - Re: [PATCH v3] staging: vme_user: simplify bus number allocation using ffz()

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Message-ID: <aTlChRvefnb6kwSX@stanley.mountain>
Date: Wed, 10 Dec 2025 12:51:01 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Dharanitharan R <dharanitharan725@...il.com>
Cc: gregkh@...uxfoundation.org, linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org, david.laight.linux@...il.com
Subject: Re: [PATCH v3] staging: vme_user: simplify bus number allocation
 using ffz()

On Wed, Dec 10, 2025 at 09:42:08AM +0000, Dharanitharan R wrote:
> David Laight pointed out that the loop in vme_register_bridge()
> is effectively searching for the first zero bit in vme_bus_numbers.
> Add a check for vme_bus_numbers == ~0UL before calling ffz().
> 
> Replace the manual loop with ffz() and use BIT(n) for consistency.
> 
> Suggested-by: David Laight <david.laight.linux@...il.com>
> Signed-off-by: Dharanitharan R <dharanitharan725@...il.com>
> ---

The patch is corrupted somehow and doesn't apply.

patching file drivers/staging/vme_user/vme.c
patch: **** malformed patch at line 204:        return ret;

regards,
dan carpenter