[PATCH v5 06/48] soc: fsl: qe: replace spin_event_timeout by readx_poll_timeout_atomic
From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Date: 2019-11-18 11:23:47
Also in:
linuxppc-dev, lkml
Subsystem:
freescale quicc engine library, freescale soc drivers, the rest · Maintainers:
Qiang Zhao, Christophe Leroy, Linus Torvalds
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 <linux@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 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);
--
2.23.0
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