From: Laurentiu Tudor <laurentiu.tudor@xxxxxxx> No need to use arch-specific memory barriers; switch to using generic ones. The rmb()s were useless so drop them. Signed-off-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx> --- drivers/staging/fsl-mc/bus/mc-sys.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/staging/fsl-mc/bus/mc-sys.c b/drivers/staging/fsl-mc/bus/mc-sys.c index a1704c3..012abd5 100644 --- a/drivers/staging/fsl-mc/bus/mc-sys.c +++ b/drivers/staging/fsl-mc/bus/mc-sys.c @@ -127,7 +127,8 @@ static inline void mc_write_command(struct mc_command __iomem *portal, /* copy command parameters into the portal */ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++) __raw_writeq(cmd->params[i], &portal->params[i]); - __iowmb(); + /* ensure command params are committed before submitting it */ + wmb(); /* submit the command by writing the header */ __raw_writeq(cmd->header, &portal->header); @@ -150,9 +151,7 @@ static inline enum mc_cmd_status mc_read_response(struct mc_command __iomem * enum mc_cmd_status status; /* Copy command response header from MC portal: */ - __iormb(); resp->header = __raw_readq(&portal->header); - __iormb(); status = mc_cmd_hdr_read_status(resp); if (status != MC_CMD_STATUS_OK) return status; @@ -160,7 +159,6 @@ static inline enum mc_cmd_status mc_read_response(struct mc_command __iomem * /* Copy command response data from MC portal: */ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++) resp->params[i] = __raw_readq(&portal->params[i]); - __iormb(); return status; } -- 2.9.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
