[RFC PATCH] mtd: lpddr: Fix bad logic in print_drs_error

From: Joe Perches
Date: Mon Mar 30 2020 - 15:58:58 EST


Update logic for broken test.
Use a more common logging style.

Miscellanea:

o Coalesce formats

Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---

Found by inspection of include files using printk.

It appears the logic in this function is broken for the
consecutive tests of

if (prog_status & 0x3)
...
else if (prog_status & 0x2)
...
else (prog_status & 0x1)
...

Likely the first test should be

if ((prog_status & 0x3) == 0x3)

And this function is only used in drivers/mtd/lpddr/lpddr_cmds.c
perhaps it should be moved there.

include/linux/mtd/pfow.h | 31 ++++++++++++++-----------------
1 file changed, 14 insertions(+), 17 deletions(-)

diff --git a/include/linux/mtd/pfow.h b/include/linux/mtd/pfow.h
index 122f343..1c08e75 100644
--- a/include/linux/mtd/pfow.h
+++ b/include/linux/mtd/pfow.h
@@ -127,31 +127,28 @@ static inline void print_drs_error(unsigned dsr)
int prog_status = (dsr & DSR_RPS) >> 8;

if (!(dsr & DSR_AVAILABLE))
- printk(KERN_NOTICE"DSR.15: (0) Device not Available\n");
- if (prog_status & 0x03)
- printk(KERN_NOTICE"DSR.9,8: (11) Attempt to program invalid "
- "half with 41h command\n");
+ pr_notice("DSR.15: (0) Device not Available\n");
+
+ if ((prog_status & 0x03) == 0x03)
+ pr_notice("DSR.9,8: (11) Attempt to program invalid half with 41h command\n");
else if (prog_status & 0x02)
- printk(KERN_NOTICE"DSR.9,8: (10) Object Mode Program attempt "
- "in region with Control Mode data\n");
+ pr_notice("DSR.9,8: (10) Object Mode Program attempt in region with Control Mode data\n");
else if (prog_status & 0x01)
- printk(KERN_NOTICE"DSR.9,8: (01) Program attempt in region "
- "with Object Mode data\n");
+ pr_notice("DSR.9,8: (01) Program attempt in region with Object Mode data\n");
+
if (!(dsr & DSR_READY_STATUS))
- printk(KERN_NOTICE"DSR.7: (0) Device is Busy\n");
+ pr_notice("DSR.7: (0) Device is Busy\n");
if (dsr & DSR_ESS)
- printk(KERN_NOTICE"DSR.6: (1) Erase Suspended\n");
+ pr_notice("DSR.6: (1) Erase Suspended\n");
if (dsr & DSR_ERASE_STATUS)
- printk(KERN_NOTICE"DSR.5: (1) Erase/Blank check error\n");
+ pr_notice("DSR.5: (1) Erase/Blank check error\n");
if (dsr & DSR_PROGRAM_STATUS)
- printk(KERN_NOTICE"DSR.4: (1) Program Error\n");
+ pr_notice("DSR.4: (1) Program Error\n");
if (dsr & DSR_VPPS)
- printk(KERN_NOTICE"DSR.3: (1) Vpp low detect, operation "
- "aborted\n");
+ pr_notice("DSR.3: (1) Vpp low detect, operation aborted\n");
if (dsr & DSR_PSS)
- printk(KERN_NOTICE"DSR.2: (1) Program suspended\n");
+ pr_notice("DSR.2: (1) Program suspended\n");
if (dsr & DSR_DPS)
- printk(KERN_NOTICE"DSR.1: (1) Aborted Erase/Program attempt "
- "on locked block\n");
+ pr_notice("DSR.1: (1) Aborted Erase/Program attempt on locked block\n");
}
#endif /* __LINUX_MTD_PFOW_H */