/* * Copyright (C) 1999 ARM Limited * Copyright (C) 2000 Deep Blue Solutions Ltd * Copyright 2006-2007,2010 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2008 Juergen Beisert, kernel@pengutronix.de * Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include #define STMP_MODULE_CLKGATE (1 << 30) #define STMP_MODULE_SFTRST (1 << 31) /* * Clear the bit and poll it cleared. This is usually called with * a reset address and mask being either SFTRST(bit 31) or CLKGATE * (bit 30). */ static int stmp_clear_poll_bit(void __iomem *addr, u32 mask) { int timeout = 0x400; writel(mask, addr + STMP_OFFSET_REG_CLR); udelay(1); while ((readl(addr) & mask) && --timeout) /* nothing */; return !timeout; } int stmp_reset_block(void __iomem *reset_addr) { int ret; int timeout = 0x400; /* clear and poll SFTRST */ ret = stmp_clear_poll_bit(reset_addr, STMP_MODULE_SFTRST); if (unlikely(ret)) goto error; /* clear CLKGATE */ writel(STMP_MODULE_CLKGATE, reset_addr + STMP_OFFSET_REG_CLR); /* set SFTRST to reset the block */ writel(STMP_MODULE_SFTRST, reset_addr + STMP_OFFSET_REG_SET); udelay(1); /* poll CLKGATE becoming set */ while ((!(readl(reset_addr) & STMP_MODULE_CLKGATE)) && --timeout) /* nothing */; if (unlikely(!timeout)) goto error; /* clear and poll SFTRST */ ret = stmp_clear_poll_bit(reset_addr, STMP_MODULE_SFTRST); if (unlikely(ret)) goto error; /* clear and poll CLKGATE */ ret = stmp_clear_poll_bit(reset_addr, STMP_MODULE_CLKGATE); if (unlikely(ret)) goto error; return 0; error: pr_err("%s(%p): module reset timeout\n", __func__, reset_addr); return -ETIMEDOUT; } EXPORT_SYMBOL(stmp_reset_block); 'right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/sunrpc/timer.c'>
path: root/net/sunrpc/timer.c
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-27 12:36:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-27 12:36:39 -0800
commit2fb78e89405f4321b86274a0c24b30896dd50529 (patch)
tree4de241e242441b80bd3f0022fc546bb07374571f /net/sunrpc/timer.c
parentdd3b9f25c867cb2507a45e436d6ede8eb08e7b05 (diff)
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe: "A set of fixes for this series. This contains: - Set of fixes for the nvme target code - A revert of patch from this merge window, causing a regression with WRITE_SAME on iSCSI targets at least. - A fix for a use-after-free in the new O_DIRECT bdev code. - Two fixes for the xen-blkfront driver" * 'for-linus' of git://git.kernel.dk/linux-block: Revert "sd: remove __data_len hack for WRITE SAME" nvme-fc: use blk_rq_nr_phys_segments nvmet-rdma: Fix missing dma sync to nvme data structures nvmet: Call fatal_error from keep-alive timout expiration nvmet: cancel fatal error and flush async work before free controller nvmet: delete controllers deletion upon subsystem release nvmet_fc: correct logic in disconnect queue LS handling block: fix use after free in __blkdev_direct_IO xen-blkfront: correct maximum segment accounting xen-blkfront: feature flags handling adjustments
Diffstat (limited to 'net/sunrpc/timer.c')