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IB/ipath: Only allow complete writes to flash 

Don't allow a write to the eeprom from ipathfs unless the write is exactly
128 bytes and starts at offset 0.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Bryan O'Sullivan 2006-09-28 09:00:05 -07:00 committed by Roland Dreier
parent f3e93c7757
commit 7dae5bff2e
1 changed files with 3 additions and 6 deletions
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9
drivers/infiniband/hw/ipath/ipath_fs.c
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@ -356,19 +356,16 @@ static ssize_t flash_write(struct file *file, const char __user *buf,
pos = *ppos;
if ( pos < 0) {
if (pos != 0) {
ret = -EINVAL;
goto bail;
}
if (pos >= sizeof(struct ipath_flash)) {
ret = 0;
if (count != sizeof(struct ipath_flash)) {
ret = -EINVAL;
goto bail;
}
if (count > sizeof(struct ipath_flash) - pos)
count = sizeof(struct ipath_flash) - pos;
tmp = kmalloc(count, GFP_KERNEL);
if (!tmp) {
ret = -ENOMEM;