From: George Hilliard <thirtythreeforty@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-mips@linux-mips.org, linux-kernel@vger.kernel.org,
George Hilliard <thirtythreeforty@gmail.com>
Subject: [PATCH v2 03/11] staging: mt7621-mmc: Fix warning when reloading module with debug msgs enabled
Date: Mon, 18 Mar 2019 20:20:04 -0600 [thread overview]
Message-ID: <20190319022012.11051-4-thirtythreeforty@gmail.com> (raw)
In-Reply-To: <20190319022012.11051-1-thirtythreeforty@gmail.com>
The kernel complained:
[ 510.277151] WARNING: CPU: 0 PID: 395 at fs/proc/generic.c:360 proc_register+0xf0/0x108
[ 510.292891] proc_dir_entry '/proc/msdc_debug' already registered
when doing a modprobe/rmmod/modprobe of this module if debug messages
are compiled in. Fix this by removing the proc entry when the module is
unloaded.
Signed-off-by: George Hilliard <thirtythreeforty@gmail.com>
---
drivers/staging/mt7621-mmc/dbg.c | 15 ++++++++++++---
drivers/staging/mt7621-mmc/dbg.h | 3 ++-
drivers/staging/mt7621-mmc/sd.c | 4 ++++
3 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/mt7621-mmc/dbg.c b/drivers/staging/mt7621-mmc/dbg.c
index fda3ba38ba37..2310f3bcc16e 100644
--- a/drivers/staging/mt7621-mmc/dbg.c
+++ b/drivers/staging/mt7621-mmc/dbg.c
@@ -294,9 +294,18 @@ static const struct file_operations msdc_debug_fops = {
.release = single_release,
};
-void msdc_debug_proc_init(void)
+// Keep ahold of the proc entry we create so it can be freed during
+// module removal
+struct proc_dir_entry *msdc_debug_proc_entry;
+
+void __init msdc_debug_proc_init(void)
{
- proc_create("msdc_debug", 0660, NULL, &msdc_debug_fops);
+ msdc_debug_proc_entry = proc_create("msdc_debug", 0660,
+ NULL, &msdc_debug_fops);
+}
+
+void __exit msdc_debug_proc_deinit(void)
+{
+ proc_remove(msdc_debug_proc_entry);
}
-EXPORT_SYMBOL_GPL(msdc_debug_proc_init);
#endif
diff --git a/drivers/staging/mt7621-mmc/dbg.h b/drivers/staging/mt7621-mmc/dbg.h
index 2d447b2d92ae..d100324aa3fe 100644
--- a/drivers/staging/mt7621-mmc/dbg.h
+++ b/drivers/staging/mt7621-mmc/dbg.h
@@ -93,7 +93,8 @@ enum msdc_dbg {
extern unsigned int sd_debug_zone[4];
#define TAG "msdc"
-void msdc_debug_proc_init(void);
+void __init msdc_debug_proc_init(void);
+void __exit msdc_debug_proc_deinit(void);
u32 msdc_time_calc(u32 old_L32, u32 old_H32, u32 new_L32, u32 new_H32);
void msdc_performance(u32 opcode, u32 sizes, u32 bRx, u32 ticks);
diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 9074848a8251..306b3b46f7c9 100644
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -1841,6 +1841,10 @@ static int __init mt_msdc_init(void)
static void __exit mt_msdc_exit(void)
{
+#if defined(MT6575_SD_DEBUG)
+ msdc_debug_proc_deinit();
+#endif
+
platform_driver_unregister(&mt_msdc_driver);
}
--
2.21.0
next prev parent reply other threads:[~2019-03-19 2:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190319022012.11051-1-thirtythreeforty@gmail.com>
2019-03-19 2:20 ` [PATCH v2 01/11] staging: mt7621-mmc: fix unused variable compiler warning George Hilliard
2019-03-19 2:20 ` [PATCH v2 02/11] staging: mt7621-mmc: Remove obsolete comments and variables George Hilliard
2019-03-19 2:20 ` George Hilliard [this message]
2019-03-20 7:19 ` [PATCH v2 03/11] staging: mt7621-mmc: Fix warning when reloading module with debug msgs enabled Greg Kroah-Hartman
2019-03-19 2:20 ` [PATCH v2 04/11] staging: mt7621-mmc: Use pinctrl subsystem to select SDXC pin mode George Hilliard
2019-03-19 2:20 ` [PATCH v2 05/11] staging: mt7621-mmc: Bill the caller for I/O time George Hilliard
2019-03-19 2:20 ` [PATCH v2 06/11] staging: mt7621-mmc: Initialize completions a single time during probe George Hilliard
2019-03-20 7:22 ` Greg Kroah-Hartman
2019-03-19 2:20 ` [PATCH v2 07/11] staging: mt7621-mmc: Check for nonzero number of scatterlist entries George Hilliard
2019-03-20 7:22 ` Greg Kroah-Hartman
2019-03-19 2:20 ` [PATCH v2 08/11] staging: mt7621-mmc: Remove redundant host->mmc->f_max write George Hilliard
2019-03-19 2:20 ` [PATCH v2 09/11] staging: mt7621-mmc: Immediately notify mmc layer of card change detection George Hilliard
2019-03-19 2:20 ` [PATCH v2 10/11] staging: mt7621-mmc: Fix BRUST -> BURST typo George Hilliard
2019-03-19 2:20 ` [PATCH v2 11/11] staging: mt7621-mmc: Only unmap_sg if mapped George Hilliard
2019-03-20 7:26 ` your mail Greg Kroah-Hartman
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