[PATCH v2 04/23] soc: fsl: qe: replace spin_event_timeout by readx_poll_timeout_atomic

[Rasmus Villemoes]

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().

Signed-off-by: Rasmus Villemoes <li...@rasmusvillemoes.dk>
---
 drivers/soc/fsl/qe/qe.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c
index 60bf047001be..bcdec37b25ca 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((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(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);
 
-- 
2.23.0