net: enetc: simplify and rename PSIIER enable/disable helpers

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The PSIIER register controls two categories of interrupt sources:
message-receive (MR) interrupts, which fire when a VF sends a mailbox
message to the PSI, and VF FLR interrupts, which fire when a VF
performs a Function Level Reset.

The current helpers enetc_msg_enable_mr_int() and
enetc_msg_disable_mr_int() use a read-modify-write sequence to update
only the MR bits in PSIIER, intending to preserve any other bits that
may be set. However, VF FLR interrupt support is not yet implemented,
so PSIIER only ever holds MR interrupt bits at this point. The
read-modify-write is therefore unnecessary overhead.

Simplify enetc_disable_psiier_interrupts() to write 0 directly to
PSIIER, disabling all interrupt sources at once, and simplify
enetc_enable_psiier_interrupts() to write the MR mask directly without
reading the current register value first.

Rename both helpers from the MR-specific names to names that reflect
their true scope, i.e. managing all PSIIER interrupt sources rather
than just the MR bits. This prepares the code for a future patch that
adds VF FLR interrupt support, at which point
enetc_enable_psiier_interrupts() will be extended to also set the
corresponding FLR bits.

Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260909100733.1139689-11-wei.fang@oss.nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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This commit is contained in:

Wei Fang 2026-09-09 18:07:28 +08:00 • committed by Paolo Abeni

parent e7ac83644e

commit 76fb8ad66d

1 changed files with 12 additions and 18 deletions

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drivers/net/ethernet/freescale/enetc/enetc_msg.c

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