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Commit 23144366 authored by Tobias Klauser's avatar Tobias Klauser Committed by Greg Kroah-Hartman
Browse files

tty: cpm_uart: use resource_size() 



Use the resource_size function instead of manually calculating the
resource size.  This reduces the chance of introducing off-by-one errors.

Signed-off-by: default avatarTobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Kumar Gala <galak@gate.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent d4bee0a6

drivers/serial/cpm_uart/cpm_uart_cpm2.c

+2 −2
Original line number Diff line number Diff line
@@ -61,7 +61,7 @@ void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port, 
	void __iomem *pram;

	unsigned long offset;

	struct resource res;

	unsigned long len;

	resource_size_t len;



	/* Don't remap parameter RAM if it has already been initialized

	 * during console setup.
@@ -74,7 +74,7 @@ void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port, 
	if (of_address_to_resource(np, 1, &res))

		return NULL;



	len = 1 + res.end - res.start;

	len = resource_size(&res);

	pram = ioremap(res.start, len);

	if (!pram)

		return NULL;