crypto_ablkcipher_decrypt – decrypt ciphertext Synopsis int crypto_ablkcipher_decrypt(struct ablkcipher_request *req); Arguments req reference to the ablkcipher_request handle that holds all information needed to perform the cipher operation Description Decrypt ciphertext data using the ablkcipher_request handle. That data structure and how it is filled with data is discussed with the ablkcipher_request_* functions. Return 0 if the cipher…
crypto_ablkcipher_blocksize – obtain block size of cipher Synopsis unsigned int crypto_ablkcipher_blocksize(struct crypto_ablkcipher *tfm); Arguments tfm cipher handle Description The block size for the ablkcipher referenced with the cipher handle is returned. The caller may use that information to allocate appropriate memory for the data returned by the encryption or decryption operation Return block size of…
create_bbt – [GENERIC] Create a bad block table by scanning the device Synopsis int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip); Arguments mtd MTD device structure buf temporary buffer bd descriptor for the good/bad block search pattern chip create the table for a specific chip, -1 read all chips; applies only if…
crc_itu_t – Compute the CRC-ITU-T for the data buffer Synopsis u16 crc_itu_t(u16 crc, const u8 * buffer, size_t len); Arguments crc previous CRC value buffer data pointer len number of bytes in the buffer Description Returns the updated CRC value Copyright
crc_ccitt – recompute the CRC for the data buffer Synopsis u16 crc_ccitt(u16 crc, u8 const * buffer, size_t len); Arguments crc previous CRC value buffer data pointer len number of bytes in the buffer Copyright
crc7_be – update the CRC7 for the data buffer Synopsis u8 crc7_be(u8 crc, const u8 * buffer, size_t len); Arguments crc previous CRC7 value buffer data pointer len number of bytes in the buffer Context any Description Returns the updated CRC7 value. The CRC7 is left-aligned in the byte (the lsbit is always 0), as that makes the computation…
crc16 – compute the CRC-16 for the data buffer Synopsis u16 crc16(u16 crc, u8 const * buffer, size_t len); Arguments crc previous CRC value buffer data pointer len number of bytes in the buffer Description Returns the updated CRC value. Copyright
copy_to_user_fromio – copy data from mmio-space to user-space Synopsis int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count); Arguments dst the destination pointer on user-space src the source pointer on mmio count the data size to copy in bytes Description Copies the data from mmio-space to user-space. Return Zero if successful, or non-zero…
copy_from_user_toio – copy data from user-space to mmio-space Synopsis int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count); Arguments dst the destination pointer on mmio-space src the source pointer on user-space count the data size to copy in bytes Description Copies the data from user-space to mmio-space. Return Zero if successful, or non-zero…
consume_skb – free an skbuff Synopsis void consume_skb(struct sk_buff *skb); Arguments skb buffer to free Description Drop a ref to the buffer and free it if the usage count has hit zero Functions identically to kfree_skb, but kfree_skb assumes that the frame is being dropped after a failure and notes that Copyright
config_ep_by_speed – configures the given endpoint according to gadget speed. Synopsis int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, struct usb_ep *_ep); Arguments g pointer to the gadget f usb function _ep the endpoint to configure Return error code, 0 on success This function chooses the right descriptors for a given endpoint according to gadget speed…
compare_ether_header – Compare two Ethernet headers Synopsis unsigned long compare_ether_header(const void *a, const void *b); Arguments a Pointer to Ethernet header b Pointer to Ethernet header Description Compare two Ethernet headers, returns 0 if equal. This assumes that the network header (i.e., IP header) is 4-byte aligned OR the platform can handle unaligned access. This…
cmf_readall – read the current channel measurement block Synopsis int cmf_readall(struct ccw_device *cdev, struct cmbdata *data); Arguments cdev the channel to be read data a pointer to a data block that will be filled Description Returns 0 on success, a negative error value otherwise. Context any Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
cmf_read – read one value from the current channel measurement block Synopsis u64 cmf_read(struct ccw_device * cdev, int index); Arguments cdev the channel to be read index the index of the value to be read Description Returns the value read or 0 if the value cannot be read. Context any Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
clk_unprepare – undo preparation of a clock source Synopsis void clk_unprepare(struct clk *clk); Arguments clk clock source Description This undoes a previously prepared clock. The caller must balance the number of prepare and unprepare calls. Must not be called from within atomic context. Copyright
clk_set_rate_range – set a rate range for a clock source Synopsis int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max); Arguments clk clock source min desired minimum clock rate in Hz, inclusive max desired maximum clock rate in Hz, inclusive Description Returns success (0) or negative errno. Copyright
clk_set_rate – set the clock rate for a clock source Synopsis int clk_set_rate(struct clk *clk, unsigned long rate); Arguments clk clock source rate desired clock rate in Hz Description Returns success (0) or negative errno. Copyright
clk_set_phase – adjust the phase shift of a clock signal Synopsis int clk_set_phase(struct clk *clk, int degrees); Arguments clk clock signal source degrees number of degrees the signal is shifted Description Shifts the phase of a clock signal by the specified degrees. Returns 0 on success, -EERROR otherwise. Copyright
clk_set_parent – set the parent clock source for this clock Synopsis int clk_set_parent(struct clk *clk, struct clk *parent); Arguments clk clock source parent parent clock source Description Returns success (0) or negative errno. Copyright
clk_set_min_rate – set a minimum clock rate for a clock source Synopsis int clk_set_min_rate(struct clk *clk, unsigned long rate); Arguments clk clock source rate desired minimum clock rate in Hz, inclusive Description Returns success (0) or negative errno. Copyright