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staging: fsl-mc: use generic memory barriers 

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@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Laurentiu Tudor 2017-07-19 14:42:26 +03:00 committed by Greg Kroah-Hartman
parent 87840fb5a9
commit 745b53649f
1 changed files with 2 additions and 4 deletions
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6
drivers/staging/fsl-mc/bus/mc-sys.c
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@ -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;
}