linux-kernel - Re: [PATCH 03/34] brcmfmac: firmware: Support having multiple alt paths

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Date:   Sun, 2 Jan 2022 09:38:13 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Hector Martin <marcan@...can.st>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-hsien Lin <chi-hsien.lin@...ineon.com>,
        Wright Feng <wright.feng@...ineon.com>,
        Chung-hsien Hsu <chung-hsien.hsu@...ineon.com>
Cc:     Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mark Kettenis <kettenis@...nbsd.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        "John W. Linville" <linville@...driver.com>,
        "Daniel (Deognyoun) Kim" <dekim@...adcom.com>,
        "brian m. carlson" <sandals@...stytoothpaste.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com
Subject: Re: [PATCH 03/34] brcmfmac: firmware: Support having multiple alt
 paths

26.12.2021 18:35, Hector Martin пишет:
> Apple platforms have firmware and config files identified with multiple
> dimensions. We want to be able to find the most specific firmware
> available for any given platform, progressively trying more general
> firmwares.
> 
> First, add support for having multiple alternate firmware paths.
> 
> Signed-off-by: Hector Martin <marcan@...can.st>
> ---
>  .../broadcom/brcm80211/brcmfmac/firmware.c    | 73 ++++++++++++++-----
>  1 file changed, 55 insertions(+), 18 deletions(-)

...
> -static char *brcm_alt_fw_path(const char *path, const char *board_type)
> +static const char **brcm_alt_fw_paths(const char *path, const char *board_type)
...
>  static int brcmf_fw_request_firmware(const struct firmware **fw,
>  				     struct brcmf_fw *fwctx)
>  {
>  	struct brcmf_fw_item *cur = &fwctx->req->items[fwctx->curpos];
> -	int ret;
> +	int ret, i;
>  
>  	/* Files can be board-specific, first try a board-specific path */
>  	if (cur->type == BRCMF_FW_TYPE_NVRAM && fwctx->req->board_type) {
> -		char *alt_path;
> +		const char **alt_paths = brcm_alt_fw_paths(cur->path, fwctx);

The brcm_alt_fw_paths() takes "board_type" argument, while you're
passing the "fwctx" to it. This patch doesn't compile.

If this code is changed by a further patch, then please use "git rebase
--exec" to compile-test all the patches.

drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c: In function
‘brcmf_fw_request_firmware’:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c:642:71:
error: passing argument 2 of ‘brcm_alt_fw_paths’ from incompatible
pointer type [-Werror=incompatible-pointer-types]
  642 |                 const char **alt_paths =
brcm_alt_fw_paths(cur->path, fwctx);
      |
      ^~~~~
      |
      |
      |
      struct brcmf_fw *
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c:597:69:
note: expected ‘const char *’ but argument is of type ‘struct brcmf_fw *’
  597 | static const char **brcm_alt_fw_paths(const char *path, const
char *board_type)
      |
~~~~~~~~~~~~^~~~~~~~~~
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c: In function
‘brcmf_fw_get_firmwares’:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c:752:59:
error: passing argument 2 of ‘brcm_alt_fw_paths’ from incompatible
pointer type [-Werror=incompatible-pointer-types]
  752 |         fwctx->alt_paths = brcm_alt_fw_paths(first->path, fwctx);
      |                                                           ^~~~~
      |                                                           |
      |                                                           struct
brcmf_fw *
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c:597:69:
note: expected ‘const char *’ but argument is of type ‘struct brcmf_fw *’
  597 | static const char **brcm_alt_fw_paths(const char *path, const
char *board_type)
      |
~~~~~~~~~~~~^~~~~~~~~~
cc1: some warnings being treated as errors