Reduce the size of the objects by consolidating
the duplicated USB_STORAGE into a single function.
Add function usb_stor_dbg to emit debugging messages.
Always validate the format and arguments.
Reduce the number of uses of CONFIG_USB_STORAGE_DEBUG.
Reduces size of objects ~7KB when CONFIG_USB_STORAGE_DEBUG
is set.
$ size drivers/usb/storage/built-in.o*
text data bss dec hex filename
140133 55296 70312 265741 40e0d drivers/usb/storage/built-in.o.new
147494 55248 70296 273038 42a8e drivers/usb/storage/built-in.o.old
Signed-off-by: Joe Perches <j...@perches.com>
---
drivers/usb/storage/debug.c | 20 +++++++++++++++++++-
drivers/usb/storage/debug.h | 14 +++++++++-----
drivers/usb/storage/isd200.c | 12 ++++++------
3 files changed, 34 insertions(+), 12 deletions(-)
diff --git a/drivers/usb/storage/debug.c b/drivers/usb/storage/debug.c
index a2b5526..b428129 100644
--- a/drivers/usb/storage/debug.c
+++ b/drivers/usb/storage/debug.c
@@ -150,7 +150,7 @@ void usb_stor_show_command(struct scsi_cmnd *srb)
default: what = "(unknown command)"; break;
}
US_DEBUGP("Command %s (%d bytes)\n", what, srb->cmd_len);
- US_DEBUGP("");
+ US_DEBUGP("bytes: ");
for (i = 0; i < srb->cmd_len && i < 16; i++)
US_DEBUGPX(" %02x", srb->cmnd[i]);
US_DEBUGPX("\n");
@@ -175,3 +175,21 @@ void usb_stor_show_sense(
US_DEBUGPX(what, ascq);
US_DEBUGPX("\n");
}
+
+int usb_stor_dbg(const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ int r;
+
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ r = printk(KERN_DEBUG USB_STORAGE "%pV", &vaf);
+
+ va_end(args);
+
+ return r;
+}
diff --git a/drivers/usb/storage/debug.h b/drivers/usb/storage/debug.h
index dbb985d..d4280e1 100644
--- a/drivers/usb/storage/debug.h
+++ b/drivers/usb/storage/debug.h
@@ -50,12 +50,16 @@
void usb_stor_show_command(struct scsi_cmnd *srb);
void usb_stor_show_sense( unsigned char key,
unsigned char asc, unsigned char ascq );
-#define US_DEBUGP(x...) printk( KERN_DEBUG USB_STORAGE x )
-#define US_DEBUGPX(x...) printk( x )
-#define US_DEBUG(x) x
+__printf(1, 2) int usb_stor_dbg(const char *fmt, ...);
+
+#define US_DEBUGP(fmt, ...) usb_stor_dbg(fmt, ##__VA_ARGS__)
+#define US_DEBUGPX(fmt, ...) printk(fmt, ##__VA_ARGS__)
+#define US_DEBUG(x) x
#else
-#define US_DEBUGP(x...)
-#define US_DEBUGPX(x...)
+#define US_DEBUGP(fmt, ...) \
+ do { if (0) printk(fmt, ##__VA_ARGS__); } while (0)
+#define US_DEBUGPX(fmt, ...) \
+ do { if (0) printk(fmt, ##__VA_ARGS__); } while (0)
#define US_DEBUG(x)
#endif
diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
index 06a3d22..55571ae 100644
--- a/drivers/usb/storage/isd200.c
+++ b/drivers/usb/storage/isd200.c
@@ -926,10 +926,6 @@ static int isd200_try_enum(struct us_data *us, unsigned
char master_slave,
/* loop until we detect !BSY or timeout */
while(1) {
-#ifdef CONFIG_USB_STORAGE_DEBUG
- char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
- "Master" : "Slave";
-#endif
status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
if ( status != ISD200_GOOD )
@@ -942,9 +938,13 @@ static int isd200_try_enum(struct us_data *us, unsigned
char master_slave,
if (!detect) {
if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
- US_DEBUGP(" %s status is still BSY, try
again...\n",mstr);
+ US_DEBUGP(" %s status is still BSY, try
again...\n",
+ master_slave ==
ATA_ADDRESS_DEVHEAD_STD ?
+ "Master" : "Slave");
} else {
- US_DEBUGP(" %s status !BSY, continue with
next operation\n",mstr);
+ US_DEBUGP(" %s status !BSY, continue with
next operation\n",
+ master_slave ==
ATA_ADDRESS_DEVHEAD_STD ?
+ "Master" : "Slave");
break;
}
}
--
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