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drm/i915/dmc_wl: Use sentinel item for range tables

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We are currently using ARRAY_SIZE() to iterate address ranges in
intel_dmc_wl_check_range(). In upcoming changes, we will be using more
than a single table and will extract the range checking logic into a
dedicated function that takes a range table as argument. As we will not
able to use ARRAY_SIZE() then, let's make range tables contain a
sentinel item at the end and use that instead of having to pass the size
as parameter in this future function.

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241108130218.24125-7-gustavo.sousa@intel.com
This commit is contained in:
Gustavo Sousa
2024-11-08 09:57:11 -03:00
committed by Matt Roper
parent 7a522aa6cf
commit 1e15bc5bd7
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/display/intel_dmc_wl.c
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@@ -53,6 +53,7 @@ struct intel_dmc_wl_range {
static struct intel_dmc_wl_range lnl_wl_range[] = {
{ .start = 0x60000, .end = 0x7ffff },
{},
};
static void __intel_dmc_wl_release(struct intel_display *display)
@@ -104,7 +105,7 @@ static bool intel_dmc_wl_check_range(i915_reg_t reg)
bool wl_needed = false;
u32 offset = i915_mmio_reg_offset(reg);
for (i = 0; i < ARRAY_SIZE(lnl_wl_range); i++) {
for (i = 0; lnl_wl_range[i].start; i++) {
if (offset >= lnl_wl_range[i].start &&
offset <= lnl_wl_range[i].end) {
wl_needed = true;