Re: [PATCH] watchdog: f71808e_wdt: Fix WDTMOUT_STS register read

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On 04/25/2016 08:18 AM, Knud Poulsen wrote:
Tested and verified on Lanner LEC-3030 Industrial PC (with F81865)

Datasheet verified for
  F71808, F71858, F71862, F71869, F71869A, F71882, F71889, F81865

Datasheet references:
F71808A:
  http://www.electronicsdatasheets.com/download/534cf560e34e2406135f4658.pdf?format=pdf
F71858:
  http://www.electronicsdatasheets.com/download/534cf55fe34e2406135f4635.pdf?format=pdf
F71862:
  http://www.hardwaresecrets.com/datasheets/F71862_V027P.pdf
F71869:
  http://www.clubedohardware.com.br/datasheets/366451_F71869.pdf
F71869A:
  http://www.chipset-ic.com/datasheet/F71869AD.pdf
F71882:
  http://www.digchip.com/datasheets/parts/datasheet/931/F71882-pdf.php
F71889:
  http://pdf1.alldatasheet.com/datasheet-pdf/view/406312/FINTEK/F71889.html
F81865:
  http://www.hardwaresecrets.com/datasheets/F81865_V028P.pdf
  http://www.alldatasheet.com/datasheet-pdf/pdf/406317/FINTEK/F81865.html

Nice work tracking those down!


Signed-off-by: Knud Poulsen <knpo@xxxxxxxx>
---
  drivers/watchdog/f71808e_wdt.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index 016bd93..6a9deac 100644
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -66,7 +66,7 @@

  #define F71808FG_FLAG_WDOUT_EN		7

-#define F71808FG_FLAG_WDTMOUT_STS	5
+#define F71808FG_FLAG_WDTMOUT_STS_BITMASK	0x40 /* Bit 6 */

For consistency with the rest of the code, please use F71808FG_FLAG_WDTMOUT_STS
and later BIT(F71808FG_FLAG_WDTMOUT_STS).

If you care to send a patch, the usage of F71808FG_FLAG_WDOUT_EN
is also wrong in one place (in watchdog_is_running()).

Thanks,
Guenter

  #define F71808FG_FLAG_WD_EN		5
  #define F71808FG_FLAG_WD_PULSE		4
  #define F71808FG_FLAG_WD_UNIT		3
@@ -655,7 +655,7 @@ static int __init watchdog_init(int sioaddr)
  	superio_select(watchdog.sioaddr, SIO_F71808FG_LD_WDT);

  	wdt_conf = superio_inb(sioaddr, F71808FG_REG_WDT_CONF);
-	watchdog.caused_reboot = wdt_conf & F71808FG_FLAG_WDTMOUT_STS;
+	watchdog.caused_reboot = wdt_conf & F71808FG_FLAG_WDTMOUT_STS_BITMASK;

  	superio_exit(sioaddr);


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