.TH "libnvme_write_reg32" 9 "libnvme_write_reg32" "October 2026" "libnvme API manual" LINUX
.SH NAME
libnvme_write_reg32 \- Write a 32-bit controller register of a PCIe controller
.SH SYNOPSIS
.B "int" libnvme_write_reg32
.BI "(struct libnvme_transport_handle *hdl "  ","
.BI "__u32 offset "  ","
.BI "__u32 value "  ");"
.SH ARGUMENTS
.IP "hdl" 12
Transport handle
.IP "offset" 12
Offset of the register in bytes
.IP "value" 12
Value to write
.SH "DESCRIPTION"
This should only be sent to controller handles, not to namespaces.
.SH "RETURN"
0 on success or a negative error code otherwise. -ENOTSUP
indicates that the transport has no memory-mapped registers.