From: Shaokun Zhang <zhangshaokun@hisilicon.com>
To: <linux-kernel@vger.kernel.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH v2] intel_th: msu: Fix unused variable warning on arm64 platform
Date: Mon, 20 May 2019 19:32:53 +0800 [thread overview]
Message-ID: <1558351973-62643-1-git-send-email-zhangshaokun@hisilicon.com> (raw)
drivers/hwtracing/intel_th/msu.c: In function ‘msc_buffer_win_alloc’:
drivers/hwtracing/intel_th/msu.c:783:21: warning: unused variable ‘i’ [-Wunused-variable]
int ret = -ENOMEM, i;
^
drivers/hwtracing/intel_th/msu.c: In function ‘msc_buffer_win_free’:
drivers/hwtracing/intel_th/msu.c:863:6: warning: unused variable ‘i’ [-Wunused-variable]
int i;
^
Fix this compiler warning on arm64 platform.
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
drivers/hwtracing/intel_th/msu.c | 40 +++++++++++++++++++++++++++-------------
1 file changed, 27 insertions(+), 13 deletions(-)
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 81bb54fa3ce8..49e64ca760e6 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -767,6 +767,30 @@ static int __msc_buffer_win_alloc(struct msc_window *win,
return -ENOMEM;
}
+#ifdef CONFIG_X86
+static void msc_buffer_set_uc(struct msc_window *win, unsigned int nr_blocks)
+{
+ int i;
+
+ for (i = 0; i < nr_blocks; i++)
+ /* Set the page as uncached */
+ set_memory_uc((unsigned long)msc_win_block(win, i), 1);
+}
+
+static void msc_buffer_set_wb(struct msc_window *win)
+{
+ int i;
+
+ for (i = 0; i < win->nr_blocks; i++)
+ /* Reset the page to write-back */
+ set_memory_wb((unsigned long)msc_win_block(win, i), 1);
+}
+#else /* !X86 */
+static inline void msc_buffer_set_uc(struct msc_window *win,
+ unsigned int nr_blocks) {}
+static inline void msc_buffer_set_wb(struct msc_window *win) {}
+#endif /* CONFIG_X86 */
+
/**
* msc_buffer_win_alloc() - alloc a window for a multiblock mode
* @msc: MSC device
@@ -780,7 +804,7 @@ static int __msc_buffer_win_alloc(struct msc_window *win,
static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
{
struct msc_window *win;
- int ret = -ENOMEM, i;
+ int ret = -ENOMEM;
if (!nr_blocks)
return 0;
@@ -811,11 +835,7 @@ static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
if (ret < 0)
goto err_nomem;
-#ifdef CONFIG_X86
- for (i = 0; i < ret; i++)
- /* Set the page as uncached */
- set_memory_uc((unsigned long)msc_win_block(win, i), 1);
-#endif
+ msc_buffer_set_uc(win, ret);
win->nr_blocks = ret;
@@ -860,8 +880,6 @@ static void __msc_buffer_win_free(struct msc *msc, struct msc_window *win)
*/
static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
{
- int i;
-
msc->nr_pages -= win->nr_blocks;
list_del(&win->entry);
@@ -870,11 +888,7 @@ static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
msc->base_addr = 0;
}
-#ifdef CONFIG_X86
- for (i = 0; i < win->nr_blocks; i++)
- /* Reset the page to write-back */
- set_memory_wb((unsigned long)msc_win_block(win, i), 1);
-#endif
+ msc_buffer_set_wb(win);
__msc_buffer_win_free(msc, win);
--
2.7.4
next reply other threads:[~2019-05-20 11:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 11:32 Shaokun Zhang [this message]
2019-06-10 8:07 ` [PATCH v2] intel_th: msu: Fix unused variable warning on arm64 platform Zhangshaokun
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