staging: rtl8192e: rtl92e_fill_tx_desc fix write to mapped out memory.
authorMalcolm Priestley <tvboxspy@gmail.com>
Thu, 11 May 2017 17:57:43 +0000 (18:57 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 25 May 2017 13:44:45 +0000 (15:44 +0200)
commitf4205502948b5825254e31d9c82d377beb85d100
tree69d823b3ef6b47811f8dad11e579eac9c7a06a4f
parente6b8f5ade3059be9cf8ab5a290c312d463b54a39
staging: rtl8192e: rtl92e_fill_tx_desc fix write to mapped out memory.

commit baabd567f87be05330faa5140f72a91960e7405a upstream.

The driver attempts to alter memory that is mapped to PCI device.

This is because tx_fwinfo_8190pci points to skb->data

Move the pci_map_single to when completed buffer is ready to be mapped with
psdec is empty to drop on mapping error.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c