5a0e3ad6af
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/*
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* drivers/net/phy/qsemi.c
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*
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* Driver for Quality Semiconductor PHYs
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*
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* Author: Andy Fleming
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*
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* Copyright (c) 2004 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/unistd.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/spinlock.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/phy.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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/* ------------------------------------------------------------------------- */
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/* The Quality Semiconductor QS6612 is used on the RPX CLLF */
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/* register definitions */
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#define MII_QS6612_MCR 17 /* Mode Control Register */
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#define MII_QS6612_FTR 27 /* Factory Test Register */
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#define MII_QS6612_MCO 28 /* Misc. Control Register */
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#define MII_QS6612_ISR 29 /* Interrupt Source Register */
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#define MII_QS6612_IMR 30 /* Interrupt Mask Register */
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#define MII_QS6612_IMR_INIT 0x003a
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#define MII_QS6612_PCR 31 /* 100BaseTx PHY Control Reg. */
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#define QS6612_PCR_AN_COMPLETE 0x1000
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#define QS6612_PCR_RLBEN 0x0200
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#define QS6612_PCR_DCREN 0x0100
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#define QS6612_PCR_4B5BEN 0x0040
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#define QS6612_PCR_TX_ISOLATE 0x0020
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#define QS6612_PCR_MLT3_DIS 0x0002
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#define QS6612_PCR_SCRM_DESCRM 0x0001
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MODULE_DESCRIPTION("Quality Semiconductor PHY driver");
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MODULE_AUTHOR("Andy Fleming");
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MODULE_LICENSE("GPL");
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/* Returns 0, unless there's a write error */
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static int qs6612_config_init(struct phy_device *phydev)
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{
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/* The PHY powers up isolated on the RPX,
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* so send a command to allow operation.
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* XXX - My docs indicate this should be 0x0940
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* ...or something. The current value sets three
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* reserved bits, bit 11, which specifies it should be
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* set to one, bit 10, which specifies it should be set
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* to 0, and bit 7, which doesn't specify. However, my
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* docs are preliminary, and I will leave it like this
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* until someone more knowledgable corrects me or it.
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* -- Andy Fleming
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*/
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return phy_write(phydev, MII_QS6612_PCR, 0x0dc0);
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}
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static int qs6612_ack_interrupt(struct phy_device *phydev)
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{
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int err;
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err = phy_read(phydev, MII_QS6612_ISR);
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if (err < 0)
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return err;
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err = phy_read(phydev, MII_BMSR);
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if (err < 0)
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return err;
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err = phy_read(phydev, MII_EXPANSION);
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if (err < 0)
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return err;
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return 0;
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}
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static int qs6612_config_intr(struct phy_device *phydev)
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{
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int err;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
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err = phy_write(phydev, MII_QS6612_IMR,
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MII_QS6612_IMR_INIT);
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else
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err = phy_write(phydev, MII_QS6612_IMR, 0);
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return err;
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}
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static struct phy_driver qs6612_driver = {
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.phy_id = 0x00181440,
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.name = "QS6612",
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.phy_id_mask = 0xfffffff0,
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.features = PHY_BASIC_FEATURES,
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.flags = PHY_HAS_INTERRUPT,
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.config_init = qs6612_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = qs6612_ack_interrupt,
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.config_intr = qs6612_config_intr,
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.driver = { .owner = THIS_MODULE,},
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};
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static int __init qs6612_init(void)
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{
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return phy_driver_register(&qs6612_driver);
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}
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static void __exit qs6612_exit(void)
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{
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phy_driver_unregister(&qs6612_driver);
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}
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module_init(qs6612_init);
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module_exit(qs6612_exit);
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