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    SubjectRe: [patch 07/30] bcm43xx: Drain TX status before starting IRQs
    Chris Wright wrote:
    > -stable review patch. If anyone has any objections, please let us know.
    > ------------------
    > From: Michael Buesch <>
    > Drain the Microcode TX-status-FIFO before we enable IRQs.
    > This is required, because the FIFO may still have entries left
    > from a previous run. Those would immediately fire after enabling
    > IRQs and would lead to an oops in the DMA TXstatus handling code.
    > Cc: "John W. Linville" <>
    > Signed-off-by: Michael Buesch <>
    > Signed-off-by: Larry Finger <>
    > Signed-off-by: Chris Wright <>
    > ---


    The regression turns out to be a locking problem involving bcm43xx, wpa_supplicant, and
    NetworkManager. The exact cause is unknown; however, this patch is clearly not the problem. Please
    reinstate it for inclusion in -stable.



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