Commit 49fd38bd authored by Stefan Weinhuber's avatar Stefan Weinhuber Committed by Martin Schwidefsky

[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: default avatarIvan Warren <ivan@vmfacility.fr>
Reviewed-by: default avatarIvan Warren <ivan@vmfacility.fr>
Tested-by: default avatarIvan Warren <ivan@vmfacility.fr>
CC: stable <stable@kernel.org>
Signed-off-by: default avatarStefan Weinhuber <wein@de.ibm.com>
parent 152382af
......@@ -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));
/*
......
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