Commit 99f039e9 authored Feb 12, 2018 by Eddie James Committed by Greg Kroah-Hartman Mar 14, 2018

fsi: Fix one and two byte bus reads/writes



Address checker fixed to allow one and two byte reads/writes.
Address alignments for each size verified.

Signed-off-by: Edward James <eajames@us.ibm.com>
Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent b8bd146d

drivers/fsi/fsi-core.c

+7 −4

Original line number	Diff line number	Diff line
		@@ -656,10 +656,13 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
		/* FSI master support */
		static int fsi_check_access(uint32_t addr, size_t size)
		{
		if (size != 1 && size != 2 && size != 4)
		if (size == 4) {
		if (addr & 0x3)
		return -EINVAL;

		if ((addr & 0x3) != (size & 0x3))
		} else if (size == 2) {
		if (addr & 0x1)
		return -EINVAL;
		} else if (size != 1)
		return -EINVAL;

		return 0;

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