ATA_EXEC_INTERNAL_SG - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : libata Core Internals

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NAMEata_exec_internal_sg − execute libata internal command

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SYNOPSISunsigned ata_exec_internal_sg(struct ata_device * dev, struct ata_taskfile * tf, const u8 * cdb, int dma_dir, struct scatterlist * sgl, unsigned int n_elem, unsigned long timeout);

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ARGUMENTSdev Device to which the command is sent tf Taskfile registers for the command and the result cdb CDB for packet command dma_dir Data tranfer direction of the command sgl sg list for the data buffer of the command n_elem Number of sg entries timeout Timeout in msecs (0 for default)

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DESCRIPTIONExecutes libata internal command with timeout​. tf contains command on entry and result on return​. Timeout and error conditions are reported via return value​. No recovery action is taken after a command times out​. It´s caller´s duty to clean up after timeout​.

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LOCKINGNone​. Should be called with kernel context, might sleep​.

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RETURNSZero on success, AC_ERR_* mask on failure

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AUTHORJeff Garzik Author.

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