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[S390] dasd: fix data size for PSF/PRSSD command 

The Perform Subsystem Function/Prepare for Read Subsystem Data
command requires 12 bytes of parameter data, but the respective data
structure dasd_psf_prssd_data has a length of 16 bytes.
Current storage servers ignore the obsolete bytes, but older models
fail to execute the command and report an incorrect length error.
This causes the device initilization for these devices to fail.
To fix this problem we need to correct the dasd_psf_prssd_data
structure and shorten it to the correct length.

Reported-by: Ivan Warren <ivan@vmfacility.fr>
Reviewed-by: Ivan Warren <ivan@vmfacility.fr>
Tested-by: Ivan Warren <ivan@vmfacility.fr>
CC: stable <stable@kernel.org>
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
This commit is contained in:
Stefan Weinhuber 2008-08-21 19:46:38 +02:00 committed by Martin Schwidefsky
parent 152382af40
commit 49fd38bdaa
1 changed files with 1 additions and 1 deletions
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2
drivers/s390/block/dasd_eckd.h
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@ -308,7 +308,7 @@ struct dasd_psf_prssd_data {
unsigned char flags;
unsigned char reserved[4];
unsigned char suborder;
unsigned char varies[9];
unsigned char varies[5];
} __attribute__ ((packed));
/*