diff options
| author | Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2019-11-28 15:55:11 +0100 |
|---|---|---|
| committer | Li Yang <leoyang.li@nxp.com> | 2019-12-09 13:54:29 -0600 |
| commit | 580996853864728ea91a48fb13d39d9c83d19106 (patch) | |
| tree | 524939f2a5cdb67aa66442a1b1ecb9283cd3e6e3 | |
| parent | 77d7676a92d1541ac6245811a754c70c605a974d (diff) | |
| download | linux-580996853864728ea91a48fb13d39d9c83d19106.tar.gz | |
soc: fsl: qe: replace spin_event_timeout by readx_poll_timeout_atomic
In preparation for allowing QE to be built for architectures other than ppc, use the generic readx_poll_timeout_atomic() helper from iopoll.h rather than the ppc-only spin_event_timeout(). Reviewed-by: Timur Tabi <timur@kernel.org> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Li Yang <leoyang.li@nxp.com>
| -rw-r--r-- | drivers/soc/fsl/qe/qe.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index 456bd7416876..85737e6f5b62 100644 --- a/drivers/soc/fsl/qe/qe.c +++ b/drivers/soc/fsl/qe/qe.c @@ -22,6 +22,7 @@ #include <linux/module.h> #include <linux/delay.h> #include <linux/ioport.h> +#include <linux/iopoll.h> #include <linux/crc32.h> #include <linux/mod_devicetable.h> #include <linux/of_platform.h> @@ -108,7 +109,8 @@ int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input) { unsigned long flags; u8 mcn_shift = 0, dev_shift = 0; - u32 ret; + u32 val; + int ret; spin_lock_irqsave(&qe_lock, flags); if (cmd == QE_RESET) { @@ -135,13 +137,12 @@ int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input) } /* wait for the QE_CR_FLG to clear */ - ret = spin_event_timeout((qe_ioread32be(&qe_immr->cp.cecr) & QE_CR_FLG) == 0, - 100, 0); - /* On timeout (e.g. failure), the expression will be false (ret == 0), - otherwise it will be true (ret == 1). */ + ret = readx_poll_timeout_atomic(qe_ioread32be, &qe_immr->cp.cecr, val, + (val & QE_CR_FLG) == 0, 0, 100); + /* On timeout, ret is -ETIMEDOUT, otherwise it will be 0. */ spin_unlock_irqrestore(&qe_lock, flags); - return ret == 1; + return ret == 0; } EXPORT_SYMBOL(qe_issue_cmd); |