From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761671AbYEVU5c (ORCPT ); Thu, 22 May 2008 16:57:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758024AbYEVU5V (ORCPT ); Thu, 22 May 2008 16:57:21 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:54318 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755955AbYEVU5U (ORCPT ); Thu, 22 May 2008 16:57:20 -0400 Date: Thu, 22 May 2008 21:44:48 +0100 From: Alan Cox To: linux-kernel@vger.kernel.org, akpm@osdl.org Subject: [PATCH] mwave: ioctl BKL pushdown Message-ID: <20080522214448.7dd1f7f8@core> X-Mailer: Claws Mail 3.3.1 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Push the BKL down to the point it wraps the actual mwave method handlers Signed-off-by: Alan Cox diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c index 8d14823..ee12de1 100644 --- a/drivers/char/mwave/mwavedd.c +++ b/drivers/char/mwave/mwavedd.c @@ -85,8 +85,8 @@ module_param(mwave_uart_io, int, 0); static int mwave_open(struct inode *inode, struct file *file); static int mwave_close(struct inode *inode, struct file *file); -static int mwave_ioctl(struct inode *inode, struct file *filp, - unsigned int iocmd, unsigned long ioarg); +static long mwave_ioctl(struct file *filp, unsigned int iocmd, + unsigned long ioarg); MWAVE_DEVICE_DATA mwave_s_mdd; @@ -117,16 +117,16 @@ static int mwave_close(struct inode *inode, struct file *file) return retval; } -static int mwave_ioctl(struct inode *inode, struct file *file, - unsigned int iocmd, unsigned long ioarg) +static long mwave_ioctl(struct file *file, unsigned int iocmd, + unsigned long ioarg) { unsigned int retval = 0; pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd; void __user *arg = (void __user *)ioarg; - PRINTK_5(TRACE_MWAVE, - "mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n", - inode, file, iocmd, (int) ioarg); + PRINTK_4(TRACE_MWAVE, + "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n", + file, iocmd, (int) ioarg); switch (iocmd) { @@ -134,7 +134,9 @@ static int mwave_ioctl(struct inode *inode, struct file *file, PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_ioctl, IOCTL_MW_RESET" " calling tp3780I_ResetDSP\n"); + lock_kernel(); retval = tp3780I_ResetDSP(&pDrvData->rBDData); + unlock_kernel(); PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, IOCTL_MW_RESET" " retval %x from tp3780I_ResetDSP\n", @@ -145,7 +147,9 @@ static int mwave_ioctl(struct inode *inode, struct file *file, PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_ioctl, IOCTL_MW_RUN" " calling tp3780I_StartDSP\n"); + lock_kernel(); retval = tp3780I_StartDSP(&pDrvData->rBDData); + unlock_kernel(); PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, IOCTL_MW_RUN" " retval %x from tp3780I_StartDSP\n", @@ -159,8 +163,10 @@ static int mwave_ioctl(struct inode *inode, struct file *file, "mwavedd::mwave_ioctl," " IOCTL_MW_DSP_ABILITIES calling" " tp3780I_QueryAbilities\n"); + lock_kernel(); retval = tp3780I_QueryAbilities(&pDrvData->rBDData, &rAbilities); + unlock_kernel(); PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES" " retval %x from tp3780I_QueryAbilities\n", @@ -191,11 +197,13 @@ static int mwave_ioctl(struct inode *inode, struct file *file, "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA," " size %lx, ioarg %lx pusBuffer %p\n", rReadData.ulDataLength, ioarg, pusBuffer); + lock_kernel(); retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd, pusBuffer, rReadData.ulDataLength, rReadData.usDspAddress); + unlock_kernel(); } break; @@ -213,10 +221,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file, " size %lx, ioarg %lx pusBuffer %p\n", rReadData.ulDataLength / 2, ioarg, pusBuffer); + lock_kernel(); retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd, pusBuffer, rReadData.ulDataLength / 2, rReadData.usDspAddress); + unlock_kernel(); } break; @@ -234,10 +244,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file, " size %lx, ioarg %lx pusBuffer %p\n", rWriteData.ulDataLength, ioarg, pusBuffer); + lock_kernel(); retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd, pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress); + unlock_kernel(); } break; @@ -255,10 +267,12 @@ static int mwave_ioctl(struct inode *inode, struct file *file, " size %lx, ioarg %lx pusBuffer %p\n", rWriteData.ulDataLength, ioarg, pusBuffer); + lock_kernel(); retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData, iocmd, pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress); + unlock_kernel(); } break; @@ -279,8 +293,10 @@ static int mwave_ioctl(struct inode *inode, struct file *file, ipcnum); return -EINVAL; } + lock_kernel(); pDrvData->IPCs[ipcnum].bIsHere = FALSE; pDrvData->IPCs[ipcnum].bIsEnabled = TRUE; + unlock_kernel(); PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC" @@ -305,6 +321,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file, return -EINVAL; } + lock_kernel(); if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { DECLARE_WAITQUEUE(wait, current); @@ -345,6 +362,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file, " processing\n", ipcnum); } + unlock_kernel(); } break; @@ -363,19 +381,18 @@ static int mwave_ioctl(struct inode *inode, struct file *file, ipcnum); return -EINVAL; } + lock_kernel(); if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { pDrvData->IPCs[ipcnum].bIsEnabled = FALSE; if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) { wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue); } } + unlock_kernel(); } break; default: - PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl:" - " Error: Unrecognized iocmd %x\n", - iocmd); return -ENOTTY; break; } /* switch */ @@ -458,7 +475,7 @@ static const struct file_operations mwave_fops = { .owner = THIS_MODULE, .read = mwave_read, .write = mwave_write, - .ioctl = mwave_ioctl, + .unlocked_ioctl = mwave_ioctl, .open = mwave_open, .release = mwave_close };