From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: "David E. Box" <david.e.box@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
platform-driver-x86@vger.kernel.org,
rajvi.jingar@linux.intel.com
Subject: Re: [PATCH V3 03/16] platform/x86/intel/vsec: Use cleanup.h
Date: Thu, 12 Oct 2023 17:46:49 +0300 (EEST) [thread overview]
Message-ID: <114e1cc4-f129-b6cd-a83b-7d822cde178@linux.intel.com> (raw)
In-Reply-To: <20231012023840.3845703-4-david.e.box@linux.intel.com>
On Wed, 11 Oct 2023, David E. Box wrote:
> Use cleanup.h helpers to handle cleanup of resources in
> intel_vsec_add_dev() after failures.
>
> Signed-off-by: David E. Box <david.e.box@linux.intel.com>
> ---
> V3 - New patch.
>
> drivers/platform/x86/intel/vsec.c | 17 ++++++++++-------
> 1 file changed, 10 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c
> index 15866b7d3117..f03ab89ab7c0 100644
> --- a/drivers/platform/x86/intel/vsec.c
> +++ b/drivers/platform/x86/intel/vsec.c
> @@ -15,6 +15,7 @@
>
> #include <linux/auxiliary_bus.h>
> #include <linux/bits.h>
> +#include <linux/cleanup.h>
> #include <linux/delay.h>
> #include <linux/kernel.h>
> #include <linux/idr.h>
> @@ -155,10 +156,10 @@ EXPORT_SYMBOL_NS_GPL(intel_vsec_add_aux, INTEL_VSEC);
> static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *header,
> struct intel_vsec_platform_info *info)
> {
> - struct intel_vsec_device *intel_vsec_dev;
> + struct intel_vsec_device __free(kfree) *intel_vsec_dev = NULL;
> struct resource *res, *tmp;
> unsigned long quirks = info->quirks;
> - int i;
> + int ret, i;
>
> if (!intel_vsec_supported(header->id, info->caps))
> return -EINVAL;
> @@ -178,10 +179,8 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
> return -ENOMEM;
>
> res = kcalloc(header->num_entries, sizeof(*res), GFP_KERNEL);
> - if (!res) {
> - kfree(intel_vsec_dev);
> + if (!res)
> return -ENOMEM;
> - }
>
> if (quirks & VSEC_QUIRK_TABLE_SHIFT)
> header->offset >>= TABLE_OFFSET_SHIFT;
> @@ -208,8 +207,12 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
> else
> intel_vsec_dev->ida = &intel_vsec_ida;
>
> - return intel_vsec_add_aux(pdev, NULL, intel_vsec_dev,
> - intel_vsec_name(header->id));
> + ret = intel_vsec_add_aux(pdev, NULL, intel_vsec_dev,
> + intel_vsec_name(header->id));
> +
> + no_free_ptr(intel_vsec_dev);
> +
> + return ret;
So if intel_vsec_add_aux() returned an error, intel_vsec_dev won't be
freed because of the call call to no_free_ptr() before return. I that's
not what you intended?
--
i.
next prev parent reply other threads:[~2023-10-12 14:46 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-12 2:38 [PATCH V3 00/16] intel_pmc: Add telemetry API to read counters David E. Box
2023-10-12 2:38 ` [PATCH V3 01/16] platform/x86/intel/vsec: Move structures to header David E. Box
2023-10-12 2:38 ` [PATCH V3 02/16] platform/x86/intel/vsec: remove platform_info from vsec device structure David E. Box
2023-10-12 15:31 ` Ilpo Järvinen
2023-10-12 16:55 ` David E. Box
2023-10-12 2:38 ` [PATCH V3 03/16] platform/x86/intel/vsec: Use cleanup.h David E. Box
2023-10-12 5:25 ` kernel test robot
2023-10-12 17:23 ` David E. Box
2023-10-13 10:39 ` Ilpo Järvinen
2023-10-13 18:14 ` Joe Perches
2023-10-24 5:15 ` Joe Perches
2023-10-12 5:48 ` kernel test robot
2023-10-12 14:46 ` Ilpo Järvinen [this message]
2023-10-12 17:13 ` David E. Box
2023-10-13 10:54 ` Ilpo Järvinen
2023-10-13 22:16 ` David E. Box
2023-10-16 12:02 ` Ilpo Järvinen
2023-10-12 2:38 ` [PATCH V3 04/16] platform/x86/intel/vsec: Add intel_vsec_register David E. Box
2023-10-12 2:38 ` [PATCH V3 05/16] platform/x86/intel/vsec: Add base address field David E. Box
2023-10-12 2:38 ` [PATCH V3 06/16] platform/x86/intel/pmt: Add header to struct intel_pmt_entry David E. Box
2023-10-12 2:38 ` [PATCH V3 07/16] platform/x86/intel/pmt: telemetry: Export API to read telemetry David E. Box
2023-10-12 2:38 ` [PATCH V3 08/16] platform/x86:intel/pmc: Call pmc_get_low_power_modes from platform init David E. Box
2023-10-12 2:38 ` [PATCH V3 09/16] platform/x86/intel/pmc: Allow pmc_core_ssram_init to fail David E. Box
2023-10-12 15:01 ` Ilpo Järvinen
2023-10-12 17:52 ` David E. Box
2023-10-13 11:36 ` Ilpo Järvinen
2023-10-12 2:38 ` [PATCH V3 10/16] platform/x86/intel/pmc: Split pmc_core_ssram_get_pmc() David E. Box
2023-10-12 15:14 ` Ilpo Järvinen
2023-10-12 17:28 ` David E. Box
2023-10-12 2:38 ` [PATCH V3 11/16] platform/x86/intel/pmc: Find and register PMC telemetry entries David E. Box
2023-10-12 15:17 ` Ilpo Järvinen
2023-10-12 2:38 ` [PATCH V3 12/16] platform/x86/intel/pmc: Display LPM requirements for multiple PMCs David E. Box
2023-10-12 2:38 ` [PATCH V3 13/16] platform/x86/intel/pmc: Retrieve LPM information using Intel PMT David E. Box
2023-10-12 2:38 ` [PATCH V3 14/16] platform/x86/intel/pmc: Read low power mode requirements for MTL-M and MTL-P David E. Box
2023-10-12 2:38 ` [PATCH V3 15/16] platform/x86/intel/pmc: Add debug attribute for Die C6 counter David E. Box
2023-10-12 2:38 ` [PATCH V3 16/16] platform/x86/intel/pmc: Show Die C6 counter on Meteor Lake David E. Box
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