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IB/ipath: Allow old and new diagnostic packet formats

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This patch checks for old and new format writes to send a packet via the
diagnostic interface.

Signed-off-by: Michael Albaugh <Michael.Albaugh@Qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Michael Albaugh
2008-04-16 21:09:28 -07:00
committed by Roland Dreier
parent 7ce5eacb45
commit afd9970f95
1 changed files with 7 additions and 2 deletions
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7
drivers/infiniband/hw/ipath/ipath_diag.c
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@@ -332,15 +332,20 @@ static ssize_t ipath_diagpkt_write(struct file *fp,
u64 val; u64 val;
u32 l_state, lt_state; /* LinkState, LinkTrainingState */ u32 l_state, lt_state; /* LinkState, LinkTrainingState */
if (count != sizeof(dp)) { if (count < sizeof(odp)) {
ret = -EINVAL; ret = -EINVAL;
goto bail; goto bail;
} }
if (count == sizeof(dp)) {
if (copy_from_user(&dp, data, sizeof(dp))) { if (copy_from_user(&dp, data, sizeof(dp))) {
ret = -EFAULT; ret = -EFAULT;
goto bail; goto bail;
} }
} else if (copy_from_user(&odp, data, sizeof(odp))) {
ret = -EFAULT;
goto bail;
}
/* /*
* Due to padding/alignment issues (lessened with new struct) * Due to padding/alignment issues (lessened with new struct)