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path: root/net/6lowpan/6lowpan_i.h
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#ifndef __6LOWPAN_I_H
#define __6LOWPAN_I_H

#include <linux/netdevice.h>

#include <net/6lowpan.h>

/* caller need to be sure it's dev->type is ARPHRD_6LOWPAN */
static inline bool lowpan_is_ll(const struct net_device *dev,
				enum lowpan_lltypes lltype)
{
	return lowpan_dev(dev)->lltype == lltype;
}

extern const struct ndisc_ops lowpan_ndisc_ops;

int addrconf_ifid_802154_6lowpan(u8 *eui, struct net_device *dev);

#ifdef CONFIG_6LOWPAN_DEBUGFS
int lowpan_dev_debugfs_init(struct net_device *dev);
void lowpan_dev_debugfs_exit(struct net_device *dev);

int __init lowpan_debugfs_init(void);
void lowpan_debugfs_exit(void);
#else
static inline int lowpan_dev_debugfs_init(struct net_device *dev)
{
	return 0;
}

static inline void lowpan_dev_debugfs_exit(struct net_device *dev) { }

static inline int __init lowpan_debugfs_init(void)
{
	return 0;
}

static inline void lowpan_debugfs_exit(void) { }
#endif /* CONFIG_6LOWPAN_DEBUGFS */

#endif /* __6LOWPAN_I_H */
d=c8f325a59cfc718d13a50fbc746ed9b415c25e92&id2=bf29bddf0417a4783da3b24e8c9e017ac649326f'>diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/gadget/function')