From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: [PATCH 1/3] qla3xxx: ethernet: Fix bogus interrupt state flag. Date: Fri, 2 Mar 2012 15:29:06 +0000 Message-ID: <1330702146.2611.1.camel@bwh-desktop> References: <1330700945-18195-1-git-send-email-santoshprasadnayak@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: , , , , , To: santosh nayak Return-path: In-Reply-To: <1330700945-18195-1-git-send-email-santoshprasadnayak@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 2012-03-02 at 20:39 +0530, santosh nayak wrote: > From: Santosh Nayak > > In 'ql_adapter_initialize' > the first call for 'spin_unlock_irqrestore()' is with hw_flags = 0, > which is as good as 'spin_unlock_irq()' (unconditional interrupt > enabling). If this is intended, then for better performance > 'spin_unlock_irqrestore()' can be replaced with 'spin_unlock_irq()' > and 'spin_lock_irqsave()' can be replaced by 'spin_lock_irq() Maybe you should make the same change in ql_adapter_up(), which is the caller that acquires this spinlock (and certainly shouldn't be called in IRQ context). Ben. > Signed-off-by: Santosh Nayak > --- > drivers/net/ethernet/qlogic/qla3xxx.c | 5 ++--- > 1 files changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c > index d49f6da..8da3e41 100644 > --- a/drivers/net/ethernet/qlogic/qla3xxx.c > +++ b/drivers/net/ethernet/qlogic/qla3xxx.c > @@ -3017,7 +3017,6 @@ static int ql_adapter_initialize(struct ql3_adapter *qdev) > (void __iomem *)port_regs; > u32 delay = 10; > int status = 0; > - unsigned long hw_flags = 0; > > if (ql_mii_setup(qdev)) > return -1; > @@ -3228,9 +3227,9 @@ static int ql_adapter_initialize(struct ql3_adapter *qdev) > value = ql_read_page0_reg(qdev, &port_regs->portStatus); > if (value & PORT_STATUS_IC) > break; > - spin_unlock_irqrestore(&qdev->hw_lock, hw_flags); > + spin_unlock_irq(&qdev->hw_lock); > msleep(500); > - spin_lock_irqsave(&qdev->hw_lock, hw_flags); > + spin_lock_irq(&qdev->hw_lock); > } while (--delay); > > if (delay == 0) { -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.