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USB: usbtmc: Fix short reads in usbtmc_read() 

The header size should not be included in the number of bytes requested of the
instrument

Signed-off-by: Steve Holland <sdh4@iastate.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Steve Holland 2009-06-18 17:37:49 -05:00 committed by Greg Kroah-Hartman
parent 492896f011
commit c2cd26e15b
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/class/usbtmc.c
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@ -407,10 +407,10 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf,
buffer[1] = data->bTag;
buffer[2] = ~(data->bTag);
buffer[3] = 0; /* Reserved */
buffer[4] = (this_part - 12 - 3) & 255;
buffer[5] = ((this_part - 12 - 3) >> 8) & 255;
buffer[6] = ((this_part - 12 - 3) >> 16) & 255;
buffer[7] = ((this_part - 12 - 3) >> 24) & 255;
buffer[4] = (this_part) & 255;
buffer[5] = ((this_part) >> 8) & 255;
buffer[6] = ((this_part) >> 16) & 255;
buffer[7] = ((this_part) >> 24) & 255;
buffer[8] = data->TermCharEnabled * 2;
/* Use term character? */
buffer[9] = data->TermChar;