pci_request_regions() is a hybrid function which becomes managed if
pcim_enable_device() was called before. This hybrid nature is deprecated
and should not be used anymore.

Replace pci_request_regions() with the always-managed function
pcim_request_all_regions().

Remove the call to pci_release_regions(), since pcim_ functions do
cleanup automatically.

Pass 0 as length parameter to pcim_iomap(), which is the standard way
for ioremapping an entire BAR.

Signed-off-by: Philipp Stanner <phasta@kernel.org>
---
 sound/soc/intel/atom/sst/sst_pci.c | 56 ++++++++++++------------------
 1 file changed, 23 insertions(+), 33 deletions(-)

diff --git a/sound/soc/intel/atom/sst/sst_pci.c b/sound/soc/intel/atom/sst/sst_pci.c
index d1e64c3500be..102d4b0e6125 100644
--- a/sound/soc/intel/atom/sst/sst_pci.c
+++ b/sound/soc/intel/atom/sst/sst_pci.c
@@ -26,7 +26,7 @@ static int sst_platform_get_resources(struct intel_sst_drv *ctx)
 	int ddr_base, ret = 0;
 	struct pci_dev *pci = ctx->pci;
 
-	ret = pci_request_regions(pci, SST_DRV_NAME);
+	ret = pcim_request_all_regions(pci, SST_DRV_NAME);
 	if (ret)
 		return ret;
 
@@ -38,66 +38,56 @@ static int sst_platform_get_resources(struct intel_sst_drv *ctx)
 		ddr_base = relocate_imr_addr_mrfld(ctx->ddr_base);
 		if (!ctx->pdata->lib_info) {
 			dev_err(ctx->dev, "lib_info pointer NULL\n");
-			ret = -EINVAL;
-			goto do_release_regions;
+			return -EINVAL;
 		}
 		if (ddr_base != ctx->pdata->lib_info->mod_base) {
 			dev_err(ctx->dev,
 					"FW LSP DDR BASE does not match with IFWI\n");
-			ret = -EINVAL;
-			goto do_release_regions;
+			return -EINVAL;
 		}
 		ctx->ddr_end = pci_resource_end(pci, 0);
 
-		ctx->ddr = pcim_iomap(pci, 0,
-					pci_resource_len(pci, 0));
-		if (!ctx->ddr) {
-			ret = -EINVAL;
-			goto do_release_regions;
-		}
+		ctx->ddr = pcim_iomap(pci, 0, 0);
+		if (!ctx->ddr)
+			return -EINVAL;
+
 		dev_dbg(ctx->dev, "sst: DDR Ptr %p\n", ctx->ddr);
 	} else {
 		ctx->ddr = NULL;
 	}
 	/* SHIM */
 	ctx->shim_phy_add = pci_resource_start(pci, 1);
-	ctx->shim = pcim_iomap(pci, 1, pci_resource_len(pci, 1));
-	if (!ctx->shim) {
-		ret = -EINVAL;
-		goto do_release_regions;
-	}
+	ctx->shim = pcim_iomap(pci, 1, 0);
+	if (!ctx->shim)
+		return -EINVAL;
+
 	dev_dbg(ctx->dev, "SST Shim Ptr %p\n", ctx->shim);
 
 	/* Shared SRAM */
 	ctx->mailbox_add = pci_resource_start(pci, 2);
-	ctx->mailbox = pcim_iomap(pci, 2, pci_resource_len(pci, 2));
-	if (!ctx->mailbox) {
-		ret = -EINVAL;
-		goto do_release_regions;
-	}
+	ctx->mailbox = pcim_iomap(pci, 2, 0);
+	if (!ctx->mailbox)
+		return -EINVAL;
+
 	dev_dbg(ctx->dev, "SRAM Ptr %p\n", ctx->mailbox);
 
 	/* IRAM */
 	ctx->iram_end = pci_resource_end(pci, 3);
 	ctx->iram_base = pci_resource_start(pci, 3);
-	ctx->iram = pcim_iomap(pci, 3, pci_resource_len(pci, 3));
-	if (!ctx->iram) {
-		ret = -EINVAL;
-		goto do_release_regions;
-	}
+	ctx->iram = pcim_iomap(pci, 3, 0);
+	if (!ctx->iram)
+		return -EINVAL;
+
 	dev_dbg(ctx->dev, "IRAM Ptr %p\n", ctx->iram);
 
 	/* DRAM */
 	ctx->dram_end = pci_resource_end(pci, 4);
 	ctx->dram_base = pci_resource_start(pci, 4);
-	ctx->dram = pcim_iomap(pci, 4, pci_resource_len(pci, 4));
-	if (!ctx->dram) {
-		ret = -EINVAL;
-		goto do_release_regions;
-	}
+	ctx->dram = pcim_iomap(pci, 4, 0);
+	if (!ctx->dram)
+		return -EINVAL;
+
 	dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);
-do_release_regions:
-	pci_release_regions(pci);
 	return ret;
 }
 
-- 
2.48.1

On Wed, Apr 16, 2025 at 03:12:13PM +0200, Philipp Stanner wrote:
> pci_request_regions() is a hybrid function which becomes managed if
> pcim_enable_device() was called before. This hybrid nature is deprecated
> and should not be used anymore.
> 
> Replace pci_request_regions() with the always-managed function
> pcim_request_all_regions().
> 
> Remove the call to pci_release_regions(), since pcim_ functions do
> cleanup automatically.
> 
> Pass 0 as length parameter to pcim_iomap(), which is the standard way
> for ioremapping an entire BAR.

...

>  sound/soc/intel/atom/sst/sst_pci.c | 56 ++++++++++++------------------
>  1 file changed, 23 insertions(+), 33 deletions(-)

Cool cleanup!

...

>  	/* DRAM */
>  	ctx->dram_end = pci_resource_end(pci, 4);
>  	ctx->dram_base = pci_resource_start(pci, 4);
> +	ctx->dram = pcim_iomap(pci, 4, 0);
> +	if (!ctx->dram)
> +		return -EINVAL;

Why EINVAL and not ENOMEM? mapping is about memory, no?

> +
>  	dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);
> -do_release_regions:
> -	pci_release_regions(pci);
>  	return ret;

Now it seems

	return 0;

should suffice here.

-- 
With Best Regards,
Andy Shevchenko