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pci_write_legacy_io(9) - phpMan

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PCI_WRITE_LEGACY_IO(9)                 Hardware Interfaces                 PCI_WRITE_LEGACY_IO(9)



NAME
       pci_write_legacy_io - write byte(s) to legacy I/O port space

SYNOPSIS
       ssize_t pci_write_legacy_io(struct file * filp, struct kobject * kobj,
                                   struct bin_attribute * bin_attr, char * buf, loff_t off,
                                   size_t count);

ARGUMENTS
       filp
           open sysfs file

       kobj
           kobject corresponding to file to read from

       bin_attr
           struct bin_attribute for this file

       buf
           buffer containing value to be written

       off
           offset into legacy I/O port space

       count
           number of bytes to write

DESCRIPTION
       Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific callback routine
       (pci_legacy_write).

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                    PCI_WRITE_LEGACY_IO(9)


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