From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>,
Thomas Gleixner <tglx@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Subject: Re: [PATCH v2 2/4] irqchip/qcom-pdc: Tighten ioremap clamp to single DRV region size
Date: Thu, 11 Jun 2026 12:40:13 +0200 [thread overview]
Message-ID: <d3d3859d-e94e-47af-8b6a-966166b883d0@oss.qualcomm.com> (raw)
In-Reply-To: <20260527095426.2324504-3-mukesh.ojha@oss.qualcomm.com>
On 5/27/26 11:54 AM, Mukesh Ojha wrote:
> The QCOM_PDC_SIZE constant (0x30000) was introduced to work around old
> sm8150 DTs that described a too-small PDC register region, causing the
> driver to silently expand the ioremap to cover three DRV regions. Now
> that the preceding DT fixes have corrected all platforms to describe only
> the APSS DRV region (0x10000), the oversized clamp is no longer needed.
>
> Replace QCOM_PDC_SIZE with PDC_DRV_SIZE (0x10000) in the clamp so the
> minimum mapped size matches a single DRV region. The clamp and warning
> are intentionally kept to preserve backward compatibility with any old
> DTs that may still describe a smaller region.
>
> While at it, rename PDC_DRV_OFFSET to PDC_DRV_SIZE since the constant
> represents the size of a DRV region and is used as both the ioremap
> minimum size and the offset to the previous DRV region.
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-06-11 10:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-27 9:54 [PATCH v2 0/4] irqchip/qcom-pdc: Misc. changes Mukesh Ojha
2026-05-27 9:54 ` [PATCH v2 1/4] irqchip/qcom-pdc: Split __pdc_enable_intr() into per-version helpers Mukesh Ojha
2026-06-03 16:29 ` [tip: irq/drivers] " tip-bot2 for Mukesh Ojha
2026-05-27 9:54 ` [PATCH v2 2/4] irqchip/qcom-pdc: Tighten ioremap clamp to single DRV region size Mukesh Ojha
2026-06-03 16:29 ` [tip: irq/drivers] " tip-bot2 for Mukesh Ojha
2026-06-11 10:40 ` Konrad Dybcio [this message]
2026-05-27 9:54 ` [PATCH v2 3/4] irqchip/qcom-pdc: Add PDC_VERSION() macro to describe version register fields Mukesh Ojha
2026-06-03 16:29 ` [tip: irq/drivers] " tip-bot2 for Mukesh Ojha
2026-05-27 9:54 ` [PATCH v2 4/4] irqchip/qcom-pdc: Use FIELD_GET() to extract bank index and bit position Mukesh Ojha
2026-06-03 16:29 ` [tip: irq/drivers] " tip-bot2 for Mukesh Ojha
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