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authorSteve Holland <sdh4@iastate.edu>2009-06-18 17:37:49 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-09-23 06:46:35 -0700
commitc2cd26e15b84b964c489f2aff278cdaf03840c93 (patch)
tree64a51e7f5da2e03d316d2ad1b607b35f2b36ccc4 /drivers/usb
parent492896f011a411d17d02e696adbc4a9b4ff68e7f (diff)
downloadlinux-c2cd26e15b84b964c489f2aff278cdaf03840c93.tar.bz2
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/class/usbtmc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 40ef4da786d8..f2fde7cd6109 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -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;