Allow a register to be unspecified, therefore not creating its debugfs
file entry.
Signed-off-by: Anisse Astier <anisse@xxxxxxxxx>
---
Changes since v2:
Acked patch not resent (BBP size), and split the second patch in two to
incorporate changes suggested by Ivo Van Doorn (thanks for the review!) :
- first part (this patch) now is only a small rewrite of the code to
initialize only the supported register. Any unsupported register wouldn't
have its files created.
- first patch best viewed ignoring spaces ((git) diff -w)
- second part is effectively adding RFCSR support.
- we allocate more data for sprintf since we add a new register.
- Updated test procedure (see below)
Changes since v1:
- removed initialization in chipsets other than rt2800, we now rely on
default initialization.
- added comments to make this explicit
- fix rfcsr size (64)
- fix pre-review bug thanks to Ivo Van Doorn
How to test ?
I'd like feedback on chipsets other than rt2800pci.
Test procedure:
mount -t debugfs none /sys/kernel/debug/
cd /sys/kernel/debug/ieee80211/phy0/rt2800pci/
cat chipset # shouldn't have any "rfcsr" line if not rt2800
ls register # shouldn't have any rfcsr_* file if not rt2800
---
drivers/net/wireless/rt2x00/rt2x00debug.c | 73 +++++++++++++++--------------
1 file changed, 38 insertions(+), 35 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c
index 78787fc..ac898c4 100644
--- a/drivers/net/wireless/rt2x00/rt2x00debug.c
+++ b/drivers/net/wireless/rt2x00/rt2x00debug.c
@@ -624,22 +624,21 @@ static struct dentry *rt2x00debug_create_file_chipset(const char *name,
data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
data += sprintf(data, "\n");
data += sprintf(data, "register\tbase\twords\twordsize\n");
- data += sprintf(data, "csr\t%d\t%d\t%d\n",
- debug->csr.word_base,
- debug->csr.word_count,
- debug->csr.word_size);
- data += sprintf(data, "eeprom\t%d\t%d\t%d\n",
- debug->eeprom.word_base,
- debug->eeprom.word_count,
- debug->eeprom.word_size);
- data += sprintf(data, "bbp\t%d\t%d\t%d\n",
- debug->bbp.word_base,
- debug->bbp.word_count,
- debug->bbp.word_size);
- data += sprintf(data, "rf\t%d\t%d\t%d\n",
- debug->rf.word_base,
- debug->rf.word_count,
- debug->rf.word_size);
+#define RT2X00DEBUGFS_SPRINTF_REGISTER(__name) \
+{ \
+ if(debug->__name.read) \
+ data += sprintf(data, __stringify(__name) \
+ "\t%d\t%d\t%d\n", \
+ debug->__name.word_base, \
+ debug->__name.word_count, \
+ debug->__name.word_size); \
+}
+ RT2X00DEBUGFS_SPRINTF_REGISTER(csr);
+ RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom);
+ RT2X00DEBUGFS_SPRINTF_REGISTER(bbp);
+ RT2X00DEBUGFS_SPRINTF_REGISTER(rf);
+#undef RT2X00DEBUGFS_SPRINTF_REGISTER
+
blob->size = strlen(blob->data);
return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
@@ -694,25 +693,29 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
if (IS_ERR(intf->register_folder) || !intf->register_folder)
goto exit;
-#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
-({ \
- (__intf)->__name##_off_entry = \
- debugfs_create_u32(__stringify(__name) "_offset", \
- S_IRUSR | S_IWUSR, \
- (__intf)->register_folder, \
- &(__intf)->offset_##__name); \
- if (IS_ERR((__intf)->__name##_off_entry) \
- || !(__intf)->__name##_off_entry) \
- goto exit; \
- \
- (__intf)->__name##_val_entry = \
- debugfs_create_file(__stringify(__name) "_value", \
- S_IRUSR | S_IWUSR, \
- (__intf)->register_folder, \
- (__intf), &rt2x00debug_fop_##__name);\
- if (IS_ERR((__intf)->__name##_val_entry) \
- || !(__intf)->__name##_val_entry) \
- goto exit; \
+#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
+({ \
+ if(debug->__name.read) { \
+ (__intf)->__name##_off_entry = \
+ debugfs_create_u32(__stringify(__name) "_offset", \
+ S_IRUSR | S_IWUSR, \
+ (__intf)->register_folder, \
+ &(__intf)->offset_##__name); \
+ if (IS_ERR((__intf)->__name##_off_entry) \
+ || !(__intf)->__name##_off_entry) \
+ goto exit; \
+ \
+ (__intf)->__name##_val_entry = \
+ debugfs_create_file(__stringify(__name) "_value", \
+ S_IRUSR | S_IWUSR, \
+ (__intf)->register_folder, \
+ (__intf), &rt2x00debug_fop_##__name); \
+ if (IS_ERR((__intf)->__name##_val_entry) \
+ || !(__intf)->__name##_val_entry) \
+ goto exit; \
+ } else \
+ DEBUG(rt2x00dev, "Unsupported register on this device: " \
+ __stringify(__name) "\n"); \
})
RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
--
1.7.9.4
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
