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Commit 7dae5bff authored by Bryan O'Sullivan's avatar Bryan O'Sullivan Committed by Roland Dreier
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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: default avatarBryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent f3e93c77

drivers/infiniband/hw/ipath/ipath_fs.c

+3 −6
Original line number Diff line number Diff line
@@ -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;