Re: [PATCH 5/8] firmware: arm_scmi: Make SMC transport a standalone driver

From: kernel test robot
Date: Tue Jul 09 2024 - 08:46:44 EST

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In reply to: Cristian Marussi: "Re: [PATCH 5/8] firmware: arm_scmi: Make SMC transport a standalone driver"
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Hi Cristian,

kernel test robot noticed the following build errors:

[auto build test ERROR on soc/for-next]
[also build test ERROR on next-20240709]
[cannot apply to linus/master v6.10-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Cristian-Marussi/firmware-arm_scmi-Introduce-setup_shmem_iomap/20240707-082513
base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link: https://lore.kernel.org/r/20240707002055.1835121-6-cristian.marussi%40arm.com
patch subject: [PATCH 5/8] firmware: arm_scmi: Make SMC transport a standalone driver
config: arm-randconfig-003-20240709 (https://download.01.org/0day-ci/archive/20240709/202407092025.wqTyq8Er-lkp@xxxxxxxxx/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project a0c6b8aef853eedaa0980f07c0a502a5a8a9740e)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240709/202407092025.wqTyq8Er-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407092025.wqTyq8Er-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

drivers/firmware/arm_scmi/scmi_transport_smc.c:157:58: warning: variable 'size' is uninitialized when used here [-Wuninitialized]
157 | void __iomem *ptr = (void __iomem *)scmi_info->shmem + size - 8;
| ^~~~
drivers/firmware/arm_scmi/scmi_transport_smc.c:136:22: note: initialize the variable 'size' to silence this warning
136 | resource_size_t size;
| ^
| = 0
>> drivers/firmware/arm_scmi/scmi_transport_smc.c:235:3: error: write to reserved register 'R7'
235 | arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->cap_id, 0,
| ^
include/linux/arm-smccc.h:570:4: note: expanded from macro 'arm_smccc_1_1_invoke'
570 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:513:48: note: expanded from macro 'arm_smccc_1_1_smc'
513 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:400:24: note: expanded from macro 'SMCCC_SMC_INST'
400 | #define SMCCC_SMC_INST __SMC(0)
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32'
215 | __inst_thumb32(thumb_opcode)
| ^
arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32'
205 | #define __inst_thumb32(x) ___inst_thumb32( \
| ^
arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32'
230 | ".short " __stringify(first) ", " __stringify(second) "\n\t"
| ^
>> drivers/firmware/arm_scmi/scmi_transport_smc.c:235:3: error: write to reserved register 'R7'
include/linux/arm-smccc.h:567:4: note: expanded from macro 'arm_smccc_1_1_invoke'
567 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:529:48: note: expanded from macro 'arm_smccc_1_1_hvc'
529 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:401:24: note: expanded from macro 'SMCCC_HVC_INST'
401 | #define SMCCC_HVC_INST __HVC(0)
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32'
215 | __inst_thumb32(thumb_opcode)
| ^
arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32'
205 | #define __inst_thumb32(x) ___inst_thumb32( \
| ^
arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32'
230 | ".short " __stringify(first) ", " __stringify(second) "\n\t"
| ^
>> drivers/firmware/arm_scmi/scmi_transport_smc.c:235:3: error: write to reserved register 'R7'
include/linux/arm-smccc.h:573:4: note: expanded from macro 'arm_smccc_1_1_invoke'
573 | __fail_smccc_1_1(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:540:8: note: expanded from macro '__fail_smccc_1_1'
540 | asm ("" : \
| ^
drivers/firmware/arm_scmi/scmi_transport_smc.c:238:3: error: write to reserved register 'R7'
238 | arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->param_page,
| ^
include/linux/arm-smccc.h:570:4: note: expanded from macro 'arm_smccc_1_1_invoke'
570 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:513:48: note: expanded from macro 'arm_smccc_1_1_smc'
513 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:400:24: note: expanded from macro 'SMCCC_SMC_INST'
400 | #define SMCCC_SMC_INST __SMC(0)
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32'
215 | __inst_thumb32(thumb_opcode)
| ^
arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32'
205 | #define __inst_thumb32(x) ___inst_thumb32( \
| ^
arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32'
230 | ".short " __stringify(first) ", " __stringify(second) "\n\t"
| ^
drivers/firmware/arm_scmi/scmi_transport_smc.c:238:3: error: write to reserved register 'R7'
include/linux/arm-smccc.h:567:4: note: expanded from macro 'arm_smccc_1_1_invoke'
567 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:529:48: note: expanded from macro 'arm_smccc_1_1_hvc'
529 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:401:24: note: expanded from macro 'SMCCC_HVC_INST'
401 | #define SMCCC_HVC_INST __HVC(0)
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32'
215 | __inst_thumb32(thumb_opcode)
| ^
arch/arm/include/asm/opcodes.h:205:27: note: expanded from macro '__inst_thumb32'
205 | #define __inst_thumb32(x) ___inst_thumb32( \
| ^
arch/arm/include/asm/opcodes.h:230:2: note: expanded from macro '___inst_thumb32'
230 | ".short " __stringify(first) ", " __stringify(second) "\n\t"
| ^
drivers/firmware/arm_scmi/scmi_transport_smc.c:238:3: error: write to reserved register 'R7'
include/linux/arm-smccc.h:573:4: note: expanded from macro 'arm_smccc_1_1_invoke'
573 | __fail_smccc_1_1(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:540:8: note: expanded from macro '__fail_smccc_1_1'
540 | asm ("" : \
| ^
1 warning and 6 errors generated.

vim +/R7 +235 drivers/firmware/arm_scmi/scmi_transport_smc.c

0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 129
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 130 static int smc_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 131 bool tx)
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 132 {
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 133 struct device *cdev = cinfo->dev;
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 134 unsigned long cap_id = ULONG_MAX;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 135 struct scmi_smc *scmi_info;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 136 resource_size_t size;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 137 struct resource res;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 138 u32 func_id;
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 139 int ret;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 140
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 141 if (!tx)
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 142 return -ENODEV;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 143
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 144 scmi_info = devm_kzalloc(dev, sizeof(*scmi_info), GFP_KERNEL);
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 145 if (!scmi_info)
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 146 return -ENOMEM;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 147
728a057b6ab114 drivers/firmware/arm_scmi/scmi_transport_smc.c Cristian Marussi 2024-07-07 148 scmi_info->shmem = core->shmem->setup_iomap(cinfo, dev, tx);
6c5d3315c40fa0 drivers/firmware/arm_scmi/smc.c Peng Fan 2024-07-07 149 if (IS_ERR(scmi_info->shmem))
6c5d3315c40fa0 drivers/firmware/arm_scmi/smc.c Peng Fan 2024-07-07 150 return PTR_ERR(scmi_info->shmem);
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 151
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 152 ret = of_property_read_u32(dev->of_node, "arm,smc-id", &func_id);
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 153 if (ret < 0)
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 154 return ret;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 155
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 156 if (of_device_is_compatible(dev->of_node, "qcom,scmi-smc")) {
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 @157 void __iomem *ptr = (void __iomem *)scmi_info->shmem + size - 8;
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 158 /* The capability-id is kept in last 8 bytes of shmem.
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 159 * +-------+ <-- 0
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 160 * | shmem |
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 161 * +-------+ <-- size - 8
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 162 * | capId |
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 163 * +-------+ <-- size
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 164 */
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 165 memcpy_fromio(&cap_id, ptr, sizeof(cap_id));
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 166 }
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 167
5f2ea10a808aef drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-05-06 168 if (of_device_is_compatible(dev->of_node, "arm,scmi-smc-param")) {
5f2ea10a808aef drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-05-06 169 scmi_info->param_page = SHMEM_PAGE(res.start);
5f2ea10a808aef drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-05-06 170 scmi_info->param_offset = SHMEM_OFFSET(res.start);
5f2ea10a808aef drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-05-06 171 }
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 172 /*
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 173 * If there is an interrupt named "a2p", then the service and
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 174 * completion of a message is signaled by an interrupt rather than by
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 175 * the return of the SMC call.
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 176 */
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 177 scmi_info->irq = of_irq_get_byname(cdev->of_node, "a2p");
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 178 if (scmi_info->irq > 0) {
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 179 ret = request_irq(scmi_info->irq, smc_msg_done_isr,
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 180 IRQF_NO_SUSPEND, dev_name(dev), scmi_info);
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 181 if (ret) {
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 182 dev_err(dev, "failed to setup SCMI smc irq\n");
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 183 return ret;
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 184 }
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 185 } else {
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 186 cinfo->no_completion_irq = true;
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 187 }
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 188
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 189 scmi_info->func_id = func_id;
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 190 scmi_info->cap_id = cap_id;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 191 scmi_info->cinfo = cinfo;
0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 192 smc_channel_lock_init(scmi_info);
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 193 cinfo->transport_info = scmi_info;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 194
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 195 return 0;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 196 }
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 197
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 198 static int smc_chan_free(int id, void *p, void *data)
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 199 {
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 200 struct scmi_chan_info *cinfo = p;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 201 struct scmi_smc *scmi_info = cinfo->transport_info;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 202
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 203 /*
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 204 * Different protocols might share the same chan info, so a previous
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 205 * smc_chan_free call might have already freed the structure.
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 206 */
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 207 if (!scmi_info)
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 208 return 0;
f1d71576d2c9ec drivers/firmware/arm_scmi/smc.c Andre Przywara 2024-01-26 209
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 210 /* Ignore any possible further reception on the IRQ path */
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 211 if (scmi_info->irq > 0)
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 212 free_irq(scmi_info->irq, scmi_info);
d1ff11d7ad8704 drivers/firmware/arm_scmi/smc.c Cristian Marussi 2023-07-19 213
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 214 cinfo->transport_info = NULL;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 215 scmi_info->cinfo = NULL;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 216
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 217 return 0;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 218 }
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 219
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 220 static int smc_send_message(struct scmi_chan_info *cinfo,
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 221 struct scmi_xfer *xfer)
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 222 {
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 223 struct scmi_smc *scmi_info = cinfo->transport_info;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 224 struct arm_smccc_res res;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 225
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 226 /*
0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 227 * Channel will be released only once response has been
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 228 * surely fully retrieved, so after .mark_txdone()
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 229 */
0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 230 smc_channel_lock_acquire(scmi_info, xfer);
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 231
728a057b6ab114 drivers/firmware/arm_scmi/scmi_transport_smc.c Cristian Marussi 2024-07-07 232 core->shmem->tx_prepare(scmi_info->shmem, xfer, cinfo);
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 233
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 234 if (scmi_info->cap_id != ULONG_MAX)
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 @235 arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->cap_id, 0,
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 236 0, 0, 0, 0, 0, &res);
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 237 else
1f17395124a53a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2023-10-09 238 arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->param_page,
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 239 scmi_info->param_offset, 0, 0, 0, 0, 0,
da405477e76707 drivers/firmware/arm_scmi/smc.c Nikunj Kela 2023-10-09 240 &res);
dd820ee21d5e07 drivers/firmware/arm_scmi/smc.c Jim Quinlan 2020-12-22 241
f7199cf489027a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2020-04-17 242 /* Only SMCCC_RET_NOT_SUPPORTED is valid error code */
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 243 if (res.a0) {
0bfdca8a8661aa drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 244 smc_channel_lock_release(scmi_info);
f7199cf489027a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2020-04-17 245 return -EOPNOTSUPP;
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 246 }
f716cbd33f038a drivers/firmware/arm_scmi/smc.c Cristian Marussi 2021-12-20 247
f7199cf489027a drivers/firmware/arm_scmi/smc.c Sudeep Holla 2020-04-17 248 return 0;
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 249 }
1dc6558062dadf drivers/firmware/arm_scmi/smc.c Peng Fan 2020-03-08 250

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