Commit 150215b8 authored by David Laight's avatar David Laight Committed by Juergen Gross
Browse files

drivers/xen: use min() instead of min_t() 



min_t(unsigned int, a, b) casts an 'unsigned long' to 'unsigned int'.
Use min(a, b) instead as it promotes any 'unsigned int' to 'unsigned long'
and so cannot discard significant bits.

In this case the 'unsigned long' value is small enough that the result
is ok.

Detected by an extra check added to min_t().

Signed-off-by: default avatarDavid Laight <david.laight.linux@gmail.com>
Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
Message-ID: <20251119224140.8616-30-david.laight.linux@gmail.com>
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
parent a73d4a05

drivers/xen/grant-table.c

+1 −1
Original line number Diff line number Diff line
@@ -1204,7 +1204,7 @@ void gnttab_foreach_grant_in_range(struct page *page, 
	unsigned int glen;

	unsigned long xen_pfn;



	len = min_t(unsigned int, PAGE_SIZE - offset, len);

	len = min(PAGE_SIZE - offset, len);

	goffset = xen_offset_in_page(offset);



	xen_pfn = page_to_xen_pfn(page) + XEN_PFN_DOWN(offset);