diff options
| author |   Eddie James <eajames@us.ibm.com> | 2018-02-12 15:45:43 +1030 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-14 19:11:00 +0100 |
| commit | 99f039e97bf8aa045d719b8e0a39ecdf396e362a (patch) | |
| tree | b7b4c84b517be1e0ac17db07451517dc3d234059 /drivers/fsi/fsi-core.c | |
| parent | fsi: master-gpio: Add external mode (diff) | |
| download | linux-dev-99f039e97bf8aa045d719b8e0a39ecdf396e362a.tar.xz linux-dev-99f039e97bf8aa045d719b8e0a39ecdf396e362a.zip | |
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>
Diffstat (limited to 'drivers/fsi/fsi-core.c')
| -rw-r--r-- | drivers/fsi/fsi-core.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 6e5aa9b26665..e5dfece248a5 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -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) - return -EINVAL; - - if ((addr & 0x3) != (size & 0x3)) + if (size == 4) { + if (addr & 0x3) + return -EINVAL; + } else if (size == 2) { + if (addr & 0x1) + return -EINVAL; + } else if (size != 1) return -EINVAL; return 0; |