nand_check_erased_ecc_chunk – check if an ECC chunk contains (almost) only 0xff data Synopsis int nand_check_erased_ecc_chunk(void *data, int datalen, void *ecc, int ecclen, void *extraoob, int extraooblen, int bitflips_threshold); Arguments data data buffer to test datalen data length ecc ECC buffer ecclen ECC length extraoob extra OOB buffer extraooblen extra OOB length bitflips_threshold maximum number of…
nand_check_erased_buf – check if a buffer contains (almost) only 0xff data Synopsis int nand_check_erased_buf(void *buf, int len, int bitflips_threshold); Arguments buf buffer to test len buffer length bitflips_threshold maximum number of bitflips Description Check if a buffer contains only 0xff, which means the underlying region has been erased and is ready to be programmed. The…
nand_calculate_ecc – [NAND Interface] Calculate 3-byte ECC for 256/512-byte block Synopsis int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf, unsigned char *code); Arguments mtd MTD block structure buf input buffer with raw data code output buffer with ECC Author Thomas Gleixner <tglx [at] linutronix.de> Author. Copyright
nand_block_markbad_lowlevel – mark a block bad Synopsis int nand_block_markbad_lowlevel(struct mtd_info *mtd, loff_t ofs); Arguments mtd MTD device structure ofs offset from device start Description This function performs the generic NAND bad block marking steps (i.e., bad block table(s) and/or marker(s)). We only allow the hardware driver to specify how to write bad block markers to…
nand_block_markbad – [MTD Interface] Mark block at the given offset as bad Synopsis int nand_block_markbad(struct mtd_info *mtd, loff_t ofs); Arguments mtd MTD device structure ofs offset relative to mtd start Author Thomas Gleixner <tglx [at] linutronix.de> Author. Copyright
nand_block_isreserved – [GENERIC] Check if a block is marked reserved. Synopsis int nand_block_isreserved(struct mtd_info *mtd, loff_t ofs); Arguments mtd MTD device structure ofs offset from device start Description Check if the block is marked as reserved. Author Thomas Gleixner <tglx [at] linutronix.de> Author. Copyright
nand_block_isbad – [MTD Interface] Check if block at offset is bad Synopsis int nand_block_isbad(struct mtd_info *mtd, loff_t offs); Arguments mtd MTD device structure offs offset relative to mtd start Author Thomas Gleixner <tglx [at] linutronix.de> Author. Copyright
nand_block_checkbad – [GENERIC] Check if a block is marked bad Synopsis int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int allowbbt); Arguments mtd MTD device structure ofs offset from device start allowbbt 1, if its allowed to access the bbt area Description Check, if the block is bad. Either by reading the bad block table or calling…
nand_block_bad – [DEFAULT] Read bad block marker from the chip Synopsis int nand_block_bad(struct mtd_info *mtd, loff_t ofs); Arguments mtd MTD device structure ofs offset from device start Description Check, if the block is bad. Author Thomas Gleixner <tglx [at] linutronix.de> Author. Copyright
mutex_unlock – release the mutex Synopsis void __sched mutex_unlock(struct mutex *lock); Arguments lock the mutex to be released Description Unlock a mutex that has been locked by this task previously. This function must not be used in interrupt context. Unlocking of a not locked mutex is not allowed. This function is similar to (but not…
mutex_trylock – try to acquire the mutex, without waiting Synopsis int __sched mutex_trylock(struct mutex *lock); Arguments lock the mutex to be acquired Description Try to acquire the mutex atomically. Returns 1 if the mutex has been acquired successfully, and 0 on contention. Note this function follows the spin_trylock convention, so it is negated from the…
mutex_lock_interruptible – acquire the mutex, interruptible Synopsis int __sched mutex_lock_interruptible(struct mutex *lock); Arguments lock the mutex to be acquired Description Lock the mutex like mutex_lock, and return 0 if the mutex has been acquired or sleep until the mutex becomes available. If a signal arrives while waiting for the lock then this function returns -EINTR….
mutex_lock – acquire the mutex Synopsis void __sched mutex_lock(struct mutex *lock); Arguments lock the mutex to be acquired Description Lock the mutex exclusively for this task. If the mutex is not available right now, it will sleep until it can get it. The mutex must later on be released by the same task that acquired…
mutex_is_locked – is the mutex locked Synopsis int mutex_is_locked(struct mutex *lock); Arguments lock the mutex to be queried Description Returns 1 if the mutex is locked, 0 if unlocked. Author Rusty Russell <rusty [at] rustcorp.com.au> Author. Copyright
mutex_init – initialize the mutex Synopsis mutex_init(mutex); Arguments mutex the mutex to be initialized Description Initialize the mutex to unlocked state. It is not allowed to initialize an already locked mutex. Author Rusty Russell <rusty [at] rustcorp.com.au> Author. Copyright
mpage_writepages – walk the list of dirty pages of the given address space & writepage all of them Synopsis int mpage_writepages(struct address_space *mapping, struct writeback_control *wbc, get_block_t get_block); Arguments mapping address space structure to write wbc subtract the number of written pages from *wbc->nr_to_write get_block the filesystem’s block mapper function. If this is NULL then…
mpage_readpages – populate an address space with some pages & start reads against them Synopsis int mpage_readpages(struct address_space *mapping, struct list_head *pages, unsigned nr_pages, get_block_t get_block); Arguments mapping the address_space pages The address of a list_head which contains the target pages. These pages have their ->index populated and are otherwise uninitialised. The page at pages->prev…
module_w1_family – Helper macro for registering a 1-Wire families Synopsis module_w1_family(__w1_family); Arguments __w1_family w1_family struct Description Helper macro for 1-Wire families which do not do anything special in module init/exit. This eliminates a lot of boilerplate. Each module may only use this macro once, and calling it replaces module_init and module_exit Author David Fries <David…
module_usb_driver – Helper macro for registering a USB driver Synopsis module_usb_driver(__usb_driver); Arguments __usb_driver usb_driver struct Description Helper macro for USB drivers which do not do anything special in module init/exit. This eliminates a lot of boilerplate. Each module may only use this macro once, and calling it replaces module_init and module_exit Copyright
module_usb_composite_driver – Helper macro for registering a USB gadget composite driver Synopsis module_usb_composite_driver(__usb_composite_driver); Arguments __usb_composite_driver usb_composite_driver struct Description Helper macro for USB gadget composite drivers which do not do anything special in module init/exit. This eliminates a lot of boilerplate. Each module may only use this macro once, and calling it replaces module_init and module_exit…