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Message-ID: <3e270780-6b3a-40e9-79f8-04068b2fe02b@gmail.com>
Date: Tue, 22 Jan 2019 22:23:41 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Realtek linux nic maintainers <nic_swsd@...ltek.com>,
David Miller <davem@...emloft.net>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next] r8169: improve firmware handling
So far member rtl_fw has three states:
- IS_ERR(rtl_fw): firmware not loaded
- !rtl_fw: no firmware available
- other: firmware loaded
This can be made simpler and clearer by adding the firmware name as
member fw_name to struct rtl8169_private. Then:
- !fw_name: no firmware available
- !rtl_fw: firmware not loaded
- rtl_fw: firmware loaded
This change also allows to easily merge rtl_request_uncached_firmware
into rtl_request_firmware.
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
drivers/net/ethernet/realtek/r8169.c | 47 +++++++++-------------------
1 file changed, 15 insertions(+), 32 deletions(-)
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 5480073e0..f574b6b55 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -684,6 +684,7 @@ struct rtl8169_private {
struct rtl8169_tc_offsets tc_offset;
u32 saved_wolopts;
+ const char *fw_name;
struct rtl_fw {
const struct firmware *fw;
@@ -696,7 +697,6 @@ struct rtl8169_private {
size_t size;
} phy_action;
} *rtl_fw;
-#define RTL_FIRMWARE_UNKNOWN ERR_PTR(-EAGAIN)
u32 ocp_base;
};
@@ -1510,11 +1510,6 @@ static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
return 0;
}
-static const char *rtl_lookup_firmware_name(struct rtl8169_private *tp)
-{
- return rtl_chip_infos[tp->mac_version].fw_name;
-}
-
static void rtl8169_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
@@ -1524,7 +1519,7 @@ static void rtl8169_get_drvinfo(struct net_device *dev,
strlcpy(info->driver, MODULENAME, sizeof(info->driver));
strlcpy(info->bus_info, pci_name(tp->pci_dev), sizeof(info->bus_info));
BUILD_BUG_ON(sizeof(info->fw_version) < sizeof(rtl_fw->version));
- if (!IS_ERR_OR_NULL(rtl_fw))
+ if (rtl_fw)
strlcpy(info->fw_version, rtl_fw->version,
sizeof(info->fw_version));
}
@@ -2201,7 +2196,7 @@ static bool rtl_fw_format_ok(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
if (fw->size % FW_OPCODE_SIZE)
goto out;
- strlcpy(version, rtl_lookup_firmware_name(tp), RTL_VER_SIZE);
+ strlcpy(version, tp->fw_name, RTL_VER_SIZE);
pa->code = (__le32 *)fw->data;
pa->size = fw->size / FW_OPCODE_SIZE;
@@ -2376,20 +2371,18 @@ static void rtl_phy_write_fw(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
static void rtl_release_firmware(struct rtl8169_private *tp)
{
- if (!IS_ERR_OR_NULL(tp->rtl_fw)) {
+ if (tp->rtl_fw) {
release_firmware(tp->rtl_fw->fw);
kfree(tp->rtl_fw);
+ tp->rtl_fw = NULL;
}
- tp->rtl_fw = RTL_FIRMWARE_UNKNOWN;
}
static void rtl_apply_firmware(struct rtl8169_private *tp)
{
- struct rtl_fw *rtl_fw = tp->rtl_fw;
-
/* TODO: release firmware once rtl_phy_write_fw signals failures. */
- if (!IS_ERR_OR_NULL(rtl_fw))
- rtl_phy_write_fw(tp, rtl_fw);
+ if (tp->rtl_fw)
+ rtl_phy_write_fw(tp, tp->rtl_fw);
}
static void rtl_apply_firmware_cond(struct rtl8169_private *tp, u8 reg, u16 val)
@@ -4377,21 +4370,20 @@ static void rtl_hw_reset(struct rtl8169_private *tp)
rtl_udelay_loop_wait_low(tp, &rtl_chipcmd_cond, 100, 100);
}
-static void rtl_request_uncached_firmware(struct rtl8169_private *tp)
+static void rtl_request_firmware(struct rtl8169_private *tp)
{
struct rtl_fw *rtl_fw;
- const char *name;
int rc = -ENOMEM;
- name = rtl_lookup_firmware_name(tp);
- if (!name)
- goto out_no_firmware;
+ /* firmware loaded already or no firmware available */
+ if (tp->rtl_fw || !tp->fw_name)
+ return;
rtl_fw = kzalloc(sizeof(*rtl_fw), GFP_KERNEL);
if (!rtl_fw)
goto err_warn;
- rc = request_firmware(&rtl_fw->fw, name, tp_to_dev(tp));
+ rc = request_firmware(&rtl_fw->fw, tp->fw_name, tp_to_dev(tp));
if (rc < 0)
goto err_free;
@@ -4400,7 +4392,7 @@ static void rtl_request_uncached_firmware(struct rtl8169_private *tp)
goto err_release_firmware;
tp->rtl_fw = rtl_fw;
-out:
+
return;
err_release_firmware:
@@ -4409,16 +4401,7 @@ static void rtl_request_uncached_firmware(struct rtl8169_private *tp)
kfree(rtl_fw);
err_warn:
netif_warn(tp, ifup, tp->dev, "unable to load firmware patch %s (%d)\n",
- name, rc);
-out_no_firmware:
- tp->rtl_fw = NULL;
- goto out;
-}
-
-static void rtl_request_firmware(struct rtl8169_private *tp)
-{
- if (IS_ERR(tp->rtl_fw))
- rtl_request_uncached_firmware(tp);
+ tp->fw_name, rc);
}
static void rtl_rx_close(struct rtl8169_private *tp)
@@ -7331,7 +7314,7 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
tp->irq_mask = RTL_EVENT_NAPI | cfg->irq_mask;
tp->coalesce_info = cfg->coalesce_info;
- tp->rtl_fw = RTL_FIRMWARE_UNKNOWN;
+ tp->fw_name = rtl_chip_infos[chipset].fw_name;
tp->counters = dmam_alloc_coherent (&pdev->dev, sizeof(*tp->counters),
&tp->counters_phys_addr,
--
2.20.1
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