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authorDmitry Kravkov <dmitry@broadcom.com>2013-10-20 16:51:33 +0200
committerDavid S. Miller <davem@davemloft.net>2013-10-21 18:31:36 -0400
commit4293b9f57a46469d6762be3300e2c3fa6515905d (patch)
treef6020068f1393722e4ed08b40033ab97d0c31c36 /drivers/tty
parent32316a46f2bbd4a898acf86547197cff8476f442 (diff)
bnx2x: Don't pretend during register dump
As part of a register dump, the interface pretends to have the identity of other interfaces of the same physical device in order to perform HW configuration for them - specifically, it needs to prevent attentions from generating on those functions as the register dump accesses registers in common blocks which whose reading might generate an attention. However, such pretension is unsafe - unlike other flows in which the driver uses pretend, during register dump there is no guarantee no other HW access will take place (by other flows). If such access will take place, the HW will be accessed by the wrong interface, and leave both functions in an incorrect state. This patch removes all pretensions from the register dump flow. Instead, it changes initial configuration of attentions such that no fatal attention will be generated for other functions as a result of the register dump (notice however, a debug print claiming an attention from other functions IS possible during the register dump) Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Ariel Elior <ariele@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/tty')
0 files changed, 0 insertions, 0 deletions